CN112240421B

CN112240421B - Safety valve device

Info

Publication number: CN112240421B
Application number: CN202011101953.9A
Authority: CN
Inventors: 李宗海
Original assignee: Shaanxi Yihao Technology Development Co ltd
Current assignee: Shaanxi Yihao Technology Development Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2022-11-25
Anticipated expiration: 2040-10-15
Also published as: CN112240421A

Abstract

The invention discloses a safety valve device, which comprises a valve pipe body, a sealing valve body assembly and a valve body linkage piece, wherein the sealing valve body assembly comprises a fixed sealing ring, a plurality of movable sealing rings and a central sealing disc; be equipped with the connecting block on the sealed leading flank of dish of center, valve body linkage spare includes U-shaped rotating turret and spacing inserted bar, and the both ends outside of U-shaped rotating turret is vertical to be equipped with coaxial valve rod respectively, and two valve rods pass through the stop collar and install on the fixed seal ring leading flank, valve rod and fixed seal ring's the heart line parallel arrangement that hangs down, spacing inserted bar one end is established on the chassis of U-shaped rotating turret through the cover barrel casing, and the spacing downthehole of establishing on the connecting block is inserted to the spacing inserted bar other end.

Description

Safety valve device

Technical Field

The invention relates to the technical field of valve equipment, in particular to a safety valve device.

Background

The butterfly valve, the ball valve, the plug valve etc. only need rotate 90 degrees and can accomplish the valve of opening, the valve of closing, and governing valve, the gate valve, stop valve etc. need rotate the valve rod many times and open, the valve of operation closes, only need rotate 90 degrees and can accomplish the valve and the valve executor cooperation of opening, close, generally in the operating mode use technology and pipeline application system under emergency, when emergency appears, simultaneous control system loses the power again, or during the air supply, the single-action actuating mechanism can automatic re-setting, drive valve to predesigned fail safe position, thereby reduce whole device potential danger to minimumly. And the valve which rotates the valve rod for opening and closing operation for many times can not be matched with the valve actuator to realize emergency opening and closing.

The valves which can be opened and closed only by rotating 90 degrees are similar to those used on some transmission pipelines with high flow rate, extra-high pressure and high sealing performance requirements, the valves have the problems of insufficient sealing performance and large opening and closing power, and the valves can not be closed timely under the impact of large-flow rate and extra-high pressure fluid, so that safety accidents are caused.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a safety valve device, which solves the problems that similar valves which can be opened and closed only by rotating 90 degrees are used on some transmission pipelines with high flow rate, extra-high pressure and high sealing performance requirements, and the valves have insufficient sealing performance and high opening and closing power.

The invention is realized by the following technical scheme:

a safety valve device comprises a valve body, a sealing valve body assembly and a valve body linkage member, wherein two ends of the valve body are respectively provided with a pipeline joint;

the sealing valve body assembly comprises a fixed sealing ring, a plurality of movable sealing rings and a central sealing disc, wherein the outer annular surface of the fixed sealing ring is fixedly connected to the inner wall of the valve pipe body, and the inner annular surface of the fixed sealing ring, the inner annular surface of the movable sealing rings, the outer annular surface of the movable sealing rings and the inner annular surface of the central sealing disc are all sealing connection conical table surfaces with large ends flowing into the pipeline end; the movable sealing rings are sequentially connected in a sealing and inserting manner from small to large, the central sealing disc can be inserted into the corresponding movable sealing ring in a sealing manner through the outer annular surface, and the corresponding movable sealing ring can be inserted into the fixed sealing ring in a sealing manner through the outer annular surface; the center sealing disc and the movable sealing ring, the movable sealing ring and the correspondingly matched movable sealing ring and the fixed sealing ring are movably connected through a plurality of matched sliding grooves and sliding blocks;

the valve body linkage part comprises a U-shaped rotating frame and a limiting insertion rod, coaxial valve rods are vertically arranged on the outer sides of two ends of the U-shaped rotating frame respectively, the two valve rods are mounted on the front side face of the fixed sealing ring through limiting sleeves, the valve rods are arranged in parallel with the vertical center line of the fixed sealing ring, one end of the limiting insertion rod is sleeved on the underframe of the U-shaped rotating frame through a sleeve, the other end of the limiting insertion rod is inserted into a limiting hole in the connecting block, the U-shaped rotating frame is attached to the front side face of the fixed sealing ring through 90-degree rotation of the valve rods, and in the process of attaching the U-shaped rotating frame to the front side face of the fixed sealing ring, the limiting insertion rod drives the central sealing disc to move towards the center of the fixed sealing ring, so that the fixed sealing ring, the plurality of movable sealing rings and the central sealing disc form a sealing valve body, and the valve is closed; make U-shaped rotating turret and the perpendicular setting of fixed seal ring side through 90 rotating valve rods, make the perpendicular process in U-shaped rotating turret and fixed seal ring side at the valve rod, spacing inserted bar drives central sealed dish and removes to the inflow pipeline end, makes central sealed dish and activity sealing ring, activity sealing ring and correspond complex activity sealing ring, activity sealing ring and fixed seal ring separation, and the valve is realized opening.

The safety valve device can be opened and closed by rotating 90 degrees as a butterfly valve, a ball valve, a plug valve and the like, can be matched with an actuator, and can automatically reset and close the valve by the actuator when a control system loses power or an air source in emergency.

Further, still including executor and valve driver, the valve rod of U-shaped rotating turret upside is sealed to pass the valve body, is equipped with the shift fork piece at the valve rod top, be equipped with a hole on the shift fork piece, executor and valve driver are installed at the valve body, and the drive telescopic shaft of valve driver and the execution telescopic shaft coaxial coupling of executor are equipped with the shifting shaft at the drive telescopic shaft, the shifting shaft is inserted and is established in the strip hole on the shift fork piece.

Furthermore, a vertebral body block is arranged on the front side surface of the connecting block.

Furthermore, at least two sliding blocks are uniformly arranged on the outer annular surfaces of the movable sealing rings and the central sealing disc in a surrounding mode, the sliding blocks are of T-shaped structures, limiting platforms are arranged on the outer side surfaces of the tail ends of the sliding blocks, sliding grooves are correspondingly arranged on the inner annular surfaces of the movable sealing rings and the fixed sealing rings, the bottom surfaces of the sliding grooves are horizontal planes and are also of T-shaped structures, and limiting strip grooves matched with the limiting platforms are arranged on the bottom surfaces of the sliding grooves.

Furthermore, sealing rings are arranged on the outer annular surfaces of the movable sealing ring and the central sealing disc and on the inner annular surfaces of the movable sealing ring and the fixed sealing ring.

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

1. the safety valve device can be opened and closed by rotating 90 degrees as a butterfly valve, a ball valve, a plug valve and the like, can be matched with an actuator, and can automatically reset and close the valve by the actuator when a control system loses a power supply or an air source in case of emergency;

2. the invention relates to a safety valve device.A valve body is creatively formed by combining a fixed sealing ring, a plurality of movable sealing rings and a central sealing disc, wherein the inner ring surface of the fixed sealing ring, the inner ring surface and the outer ring surface of the movable sealing rings and the inner ring surface of the central sealing disc are all sealing connection conical table surfaces of which the large ends flow into a pipeline end; when the valve is in a closed state, the valve cannot be pressed open no matter how much pressure intensity exists in the pipeline, but the sealing is tighter, when the valve body of the multi-ring nested structure needs emergency closing, as the pressure of fluid exists on the front side surfaces of the movable sealing rings and the central sealing disc, the valve can be closed by the actuator only needing a small acting force; similarly, when the valve needs to be opened, the central sealing disc is firstly pulled by the U-shaped rotating frame and the limiting insertion rod, the area of the central sealing disc is smaller relative to the whole valve body, and meanwhile, the conical body block is arranged on the front side surface of the central sealing disc, so that the pressure action of fluid on the central sealing disc is smaller, the central sealing disc can be opened by a valve driver with small force, and once the central sealing disc is opened, the movable sealing ring and the movable sealing ring, the movable sealing ring and the fixed sealing ring which are correspondingly matched are easier to open; the structure of the actuator can be very small, unlike the actuator on the existing large-diameter pipeline which is 1-2 meters long, and the valve driver can also adopt low-power equipment, thereby greatly reducing the use cost of the whole valve;

3. the invention relates to a safety valve device, which adopts a valve body linkage part comprising a U-shaped rotating frame and a limiting insertion rod, wherein the problem that the telescopic movement of a central sealing disc is not easy to solve is realized by rotating the U-shaped rotating frame by 90 degrees.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic view of an external structure of a safety valve device according to the present invention;

FIG. 2 is a schematic top view of the safety valve device of the present invention in an open state;

FIG. 3 is a schematic front view of the safety valve device according to the present invention in an open state;

FIG. 4 is a schematic front view of a safety valve device according to the present invention in a closed state;

FIG. 5 is a schematic side view of a closed state of a safety valve device according to the present invention;

FIG. 6 is a schematic view of the sliding groove arrangement according to the present invention;

FIG. 7 is a schematic view of the slider structure of the present invention;

FIG. 8 is a schematic view of the structure of the sliding slot and the sliding block of the present invention;

reference numbers and corresponding part names in the drawings:

1-valve pipe body, 2-pipeline joint, 3-fixed sealing ring, 4-movable sealing ring, 5-central sealing disc, 6-connecting block, 7-U-shaped rotating frame, 8-limit inserting rod, 9-valve rod, 10-limit sleeve, 11-sleeve, 12-bottom frame, 13-limit hole, 14-actuator, 15-valve driver, 16-shifting fork block, 17-strip hole, 18-drive telescopic shaft, 19-execution telescopic shaft, 20-shifting shaft, 21-vertebral block, 22-limit platform, 23-limit strip groove, 24-sliding groove and 25-sliding block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Examples

As shown in fig. 1-8, the safety valve device of the present invention comprises a valve tube body 1, a sealing valve body assembly and a valve body linkage, wherein two ends of the valve tube body 1 are respectively provided with a pipeline connector 2, one end of the valve tube body 1 is connected with an inflow pipeline through the pipeline connector 2, the inflow pipeline is a front side surface, and the other end of the valve tube body 1 is connected with an outflow pipeline through the pipeline connector 2; the diameter of the valve tube body 1 is generally more than 2 times larger than that of the inflow pipeline and the outflow pipeline, because when the valve is opened, the flow area of the valve tube body 1 is only the gaps between the central sealing disk 5 and the movable sealing ring 4, between the movable sealing ring 4 and the movable sealing ring 4 correspondingly matched with the movable sealing ring 4 and between the movable sealing ring 4 and the fixed sealing ring 3, and the effective flow area of the gaps is larger than or equal to the flow area of the inflow pipeline and the outflow pipeline.

The sealing valve body assembly comprises a fixed sealing ring 3, a plurality of movable sealing rings 4 and a central sealing disc 5, in the implementation, the number of the movable sealing rings 4 is 2, the number of the movable sealing rings 4 is generally set by considering the inner diameter of a valve pipe body 1 and the thickness of the movable sealing rings 4, the 2-4 movable sealing rings 4 are generally reasonably arranged, the outer annular surface of the fixed sealing ring 3 is fixedly connected to the inner wall of the valve pipe body 1, the inner annular surface of the fixed sealing ring 3, the inner annular surface and the outer annular surface of the movable sealing ring 4 and the inner annular surface of the central sealing disc 5 are all sealing connection conical table surfaces with large ends facing an inflow pipeline end, and the movable sealing rings 4 and the central sealing disc 5 can only move and stretch towards the inflow pipeline setting end; the movable sealing rings 4 are sequentially connected in a sealing and inserting manner from small to large, the central sealing disc 5 can be inserted in the corresponding movable sealing ring 4 in a sealing manner through the outer annular surface, and the corresponding movable sealing ring 4 can be inserted in the fixed sealing ring 3 in a sealing manner through the outer annular surface; between central sealed dish 5 and the activity sealing ring 4, between activity sealing ring 4 and the activity sealing ring 4 that corresponds the complex, all through many mating sliding tray 24 and sliding block 25 swing joint between activity sealing ring 4 and the fixed seal ring 3, sliding tray 24 and sliding block 25 mainly play connect with spacing effect.

The invention relates to a safety valve device, wherein a valve body is creatively formed by combining a fixed sealing ring 3, a plurality of movable sealing rings 4 and a central sealing disc 5, and the inner annular surface of the fixed sealing ring 3, the inner annular surface and the outer annular surface of the movable sealing rings 4 and the inner annular surface of the central sealing disc 5 are all sealing connection conical table surfaces of large-end inflow pipeline ends; when the valve is in a closed state, the valve cannot be pressed open no matter how much pressure intensity exists in the pipeline, but the sealing is tighter, when the valve body of the multi-ring nested structure needs to be closed emergently, as the pressure of fluid exists on the front side surfaces of the movable sealing rings 4 and the central sealing disc 5, the actuator 14 can close the valve only by small acting force; similarly, when the valve needs to be opened, the central sealing disk 5 is firstly drawn by the U-shaped rotating frame 7 and the limiting insertion rod 8, the area of the central sealing disk 5 is smaller than that of the whole valve body, and meanwhile, the conical body block 21 is arranged on the front side surface of the central sealing disk 5, so that the pressure action of fluid on the central sealing disk 5 is smaller, the central sealing disk 5 can be opened by the valve driver 15 with small force, and once the central sealing disk 5 is opened, the movable sealing ring 4 and the movable sealing ring 4, the movable sealing ring 4 and the fixed sealing ring 3 which are correspondingly matched are easier to open; thus, the actuator 14 can be made small, unlike the existing actuator on a large-diameter pipeline which is 1-2 meters long, and the valve driver 15 can also adopt a low-power device, thereby greatly reducing the use cost of the whole valve.

The front side face of the central sealing disc 5 is provided with a connecting block 6, when the valve is closed, the connecting block 6 protrudes out of the front side face of a valve body formed by the fixed sealing ring 3, the plurality of movable sealing rings 4 and the central sealing disc 5, the front side face of the connecting block 6 is provided with a cone block 21, and the cone block 21 is mainly used for reducing the resistance of fluid to the central sealing disc 5 when the valve is opened. The valve body linkage piece comprises a U-shaped rotating frame 7 and a limiting insertion rod 8, coaxial valve rods 9 are vertically and respectively arranged on the outer sides of two ends of the U-shaped rotating frame 7, the two valve rods 9 are installed on the front side face of the fixed sealing ring 3 through a limiting sleeve 10, the valve rods 9 and the vertical center line of the fixed sealing ring 3 are eccentrically and parallelly arranged, the vertical center line distance between the valve rods 9 and the fixed sealing ring 3 is about 15mm more than the radius of the central sealing disc 5, the structure and the size of the U-shaped rotating frame 7 need to be considered globally, the 90-degree rotating track of the U-shaped rotating frame 7 cannot interfere with other equipment, if interference exists, the arc structure and the length of two side frames of the U-shaped rotating frame 7 can be changed for processing, one end of the limiting insertion rod 8 is sleeved on an underframe 12 of the U-shaped rotating frame 7 through a sleeve 11, the other end of the limiting insertion rod 8 is inserted into a limiting hole 13 in a sealing disc 6, the U-shaped rotating frame 7 is enabled to enable the U-shaped rotating frame 7 to be attached to the front side face of the fixed sealing ring 3 through the 90-shaped rotating rod 9, the U-shaped rotating frame 9 and the front side face of the fixed sealing ring 3 in the attaching process, the U-shaped rotating frame 9 and the fixed sealing ring 3, the limiting insertion rod 8 drives the fixed sealing ring 3 to move towards the fixed sealing ring 3, and enable the fixed sealing ring to form a closed valve body, and a plurality of the valve body to form a closed sealing ring 4, and a plurality of the valve body; make U-shaped rotating turret 7 and 3 side vertical settings of fixed seal ring through 90 pivoted valve rods 9, make U-shaped rotating turret 7 and 3 side vertical processes of fixed seal ring at valve rods 9, spacing inserted bar 8 drives central sealed dish 5 and moves to the pipeline end that flows in, makes central sealed dish 5 and movable seal ring 4, movable seal ring 4 and correspond complex movable seal ring 4, movable seal ring 4 and fixed seal ring 3 separation, and the valve is realized opening.

The invention relates to a safety valve device, which adopts a valve body linkage part comprising a U-shaped rotating frame 7 and a limiting insertion rod 8, wherein the problem that the telescopic movement of a central sealing disc 5 is difficult to solve is realized by rotating the U-shaped rotating frame 7 by 90 degrees.

The valve structure of the invention also comprises an actuator 14 and a valve driver 15, wherein the actuator 14 and the valve driver 15 are common parts on the existing valve, and the type and the size of the adopted parts are strict standards, the invention is not detailed any more, a valve rod 9 on the upper side of the U-shaped rotating frame 7 passes through the valve pipe body 1 in a sealing way, a shifting fork block 16 is arranged at the top of the valve rod 9, a strip hole 17 is arranged on the shifting fork block 16, the actuator 14 and the valve driver 15 are arranged on the valve pipe body 1, a driving telescopic shaft 18 of the valve driver 15 is coaxially connected with an execution telescopic shaft 19 of the actuator 14, a shifting shaft 20 is arranged on the driving telescopic shaft 18, and the shifting shaft 20 is inserted in the strip hole 17 on the shifting fork block 16.

At least two sliding blocks 25 are uniformly arranged on the outer annular surfaces of the movable sealing rings 4 and the central sealing disc 5 in a surrounding mode, in this example, 4 sets of sliding grooves 24 and sliding blocks 25 are adopted, each sliding block 25 is of a T-shaped structure, a limiting table 22 is arranged on the outer side surface of the tail end of each sliding block 25, the sliding grooves 24 are arranged on the inner annular surfaces of the movable sealing rings 4 and the fixed sealing rings 3 corresponding to the sliding blocks 25, the bottom surfaces of the sliding grooves 24 are horizontal planes, the sliding grooves 24 are also of T-shaped structures, and limiting strip grooves 23 matched with the limiting tables 22 are arranged on the bottom surfaces of the sliding grooves 24. The sliding groove 24 and the sliding block 25 do not need to adopt a T-shaped structure, the lath can be a lath as long as the sealing blocks can be limited not to deflect or incline when stretching, the limiting table 22 and the limiting strip groove 23 are necessarily arranged, the extending length of each sealing block can be limited through the limiting table 22 and the limiting strip groove 23, and the limiting strip groove 23 is not through on the bottom surface of the sliding groove 24, so that the movement is limited when the limiting table 22 abuts against the side edge of the limiting strip groove 23.

And sealing rings are arranged on the outer ring surfaces of the movable sealing ring 4 and the central sealing disc 5 and on the inner ring surfaces of the movable sealing ring 4 and the fixed sealing ring 3. When the fixed sealing ring 3, the movable sealing rings 4 and the central sealing disk 5 are matched accurately, only a sealing coating needs to be coated on a contact surface, the sealing ring or the sealing gasket is also a common sealing means, if the sealing ring or the sealing gasket is adopted, the arrangement positions of the sliding groove 24 and the sliding block 25 need to be matched, the sliding block 25 is generally arranged on a half ring surface on the rear side of the outer ring surface, the sliding groove 24 is correspondingly arranged on a half ring surface on the rear side of the inner ring surface, therefore, when the inner ring surface and the outer ring surface are in sealing fit, the general ring surfaces are in smooth fit, sealing connection is facilitated, and coating or sealing equipment can be arranged.

The safety valve device can be opened and closed by rotating 90 degrees as a butterfly valve, a ball valve, a plug valve and the like, can be matched with an actuator, and can be automatically reset and closed by the actuator when a control system loses power or air source in emergency.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a relief valve door gear, includes valve body (1), sealed valve body subassembly and valve body linkage, its characterized in that: the two ends of the valve pipe body (1) are respectively provided with a pipeline joint (2), one end of the valve pipe body (1) is connected with an inflow pipeline through the pipeline joint (2), and the other end of the valve pipe body (1) is connected with an outflow pipeline through the pipeline joint (2);

the sealing valve body assembly comprises a fixed sealing ring (3), a plurality of movable sealing rings (4) and a central sealing disc (5), wherein the outer annular surface of the fixed sealing ring (3) is fixedly connected to the inner wall of the valve pipe body (1), and the inner annular surface of the fixed sealing ring (3), the inner annular surface and the outer annular surface of the movable sealing rings (4) and the inner annular surface of the central sealing disc (5) are all sealing connection conical table surfaces with large ends flowing into the pipeline end; the movable sealing rings (4) are sequentially connected in a sealing and inserting way from small to large, the central sealing disc (5) can be inserted in the corresponding movable sealing ring (4) in a sealing way through the outer annular surface, and the corresponding movable sealing ring (4) can be inserted in the fixed sealing ring (3) in a sealing way through the outer annular surface; the center sealing disc (5) is movably connected with the movable sealing ring (4), the movable sealing ring (4) is correspondingly matched with the movable sealing ring (4), and the movable sealing ring (4) is movably connected with the fixed sealing ring (3) through a plurality of sliding grooves (24) and sliding blocks (25) which are matched in pairs;

be equipped with connecting block (6) on central sealed dish (5) leading flank, valve body linkage spare includes U-shaped rotating turret (7) and spacing inserted bar (8), the both ends outside of U-shaped rotating turret (7) is vertical to be equipped with coaxial valve rod (9) respectively, and two valve rod (9) are installed on stationary seal ring (3) leading flank through stop collar (10), valve rod (9) and stationary seal ring (3) the perpendicular heart line parallel arrangement, sleeve (11) cover is passed through to spacing inserted bar (8) one end and is established on chassis (12) of U-shaped rotating turret (7), and spacing inserted bar (8) other end is inserted and is established in spacing hole (13) on connecting block (6), rotates valve rod (9) through 90 degrees and realizes that the valve is opened and close.

2. A safety valve arrangement as claimed in claim 1, wherein: still including executor (14) and valve driver (15), valve rod (9) of U-shaped rotating turret (7) upside are sealed to pass valve body (1), are equipped with shifting fork piece (16) at valve rod (9) top, be equipped with strip hole (17) on shifting fork piece (16), install at valve body (1) executor (14) and valve driver (15), and the drive telescopic shaft (18) of valve driver (15) and execution telescopic shaft (19) coaxial coupling of executor (14) are equipped with shifting shaft (20) in drive telescopic shaft (18), shifting shaft (20) are inserted and are established in strip hole (17) on shifting fork piece (16).

3. A safety valve arrangement as claimed in claim 1, wherein: the front side surface of the connecting block (6) is provided with a vertebral body block (21).

4. A safety valve arrangement as claimed in claim 1, wherein: at least two sliding blocks (25) are uniformly arranged on the outer annular surfaces of the movable sealing rings (4) and the central sealing disc (5) in a surrounding mode, the sliding blocks (25) are of a T-shaped structure, a limiting platform (22) is arranged on the outer side surface of the tail end of each sliding block (25), sliding grooves (24) are formed in the inner annular surfaces of the movable sealing rings (4) and the fixed sealing rings (3) and correspond to the sliding blocks (25), the bottom surfaces of the sliding grooves (24) are horizontal planes, the sliding grooves (24) are also of T-shaped structures, and limiting strip grooves (23) matched with the limiting platforms (22) are formed in the bottom surfaces of the sliding grooves (24).

5. A safety valve arrangement as claimed in claim 1, wherein: sealing rings are arranged on the outer ring surfaces of the movable sealing ring (4) and the central sealing ring (5) and on the inner ring surfaces of the movable sealing ring (4) and the fixed sealing ring (3).