CN210106630U - Large-diameter valve with hydraulic external flashboard - Google Patents

Abstract

The utility model provides a hydraulic external flashboard heavy-caliber valve which has novel structural design and is suitable for heavy-caliber pipelines; comprises a valve body and a flashboard; the valve body is provided with a round hole, the inner wall of the round hole is provided with an annular flashboard guide groove, one end part of the valve body is provided with a through hole which penetrates through the end part of the valve body and is communicated with the guide groove, the guide groove is rectangular, the flashboard penetrates through the through hole and is positioned in the guide groove, and the flashboard can slide in the guide groove; an oil cylinder is fixed outside the valve body, and a pushing shaft of the oil cylinder is connected with the end part of the flashboard and can drive the flashboard to move in the guide groove.

Description

Large-diameter valve with hydraulic external flashboard

Technical Field

The utility model relates to a incessantly defeated area of super large-diameter pipeline is pressed trompil, the used valve technical field of shutoff, especially relates to an external flashboard heavy-calibre valve of hydraulic pressure.

Background

When large-caliber and ultra-large-caliber pipelines in the steel industry, the metallurgical industry and the like are plugged with pressure and open holes without stopping conveying, special valves are needed to be used for plugging media in the pipelines, however, in view of the currently used valves, in the field, firstly, the used valves are large in size and weight, such as DN1800 valves (the weight can reach nearly 20 tons), secondly, because the pipelines are large in caliber, the valves are large in size and weight, in the construction process, the weight of the valves needs to be completely pressed on the pipelines, and even though the valves are provided with valve supporting seats, the safe operation of the pipelines still has great potential safety hazards; moreover, the existing heavy valve is inconvenient in transportation and moving processes, and further the transportation cost and the labor cost are increased.

Disclosure of Invention

The utility model aims to overcome the not enough of prior art, adapt to reality needs, provide a structural design is novel, be applicable to the external flashboard heavy-calibre valve of hydraulic pressure on the heavy-calibre pipeline.

In order to realize the utility model discloses a purpose, the utility model discloses the technical scheme who adopts does:

designing a hydraulic external flashboard large-caliber valve, which comprises a valve body and a flashboard; the valve body is provided with a round hole, the inner wall of the round hole is provided with an annular flashboard guide groove, one end part of the valve body is provided with a through hole which penetrates through the end part of the valve body and is communicated with the guide groove, the guide groove is rectangular, the flashboard penetrates through the through hole and is positioned in the guide groove, and the flashboard can slide in the guide groove; an oil cylinder is fixed outside the valve body, and a pushing shaft of the oil cylinder is connected with the end part of the flashboard and can drive the flashboard to move in the guide groove.

The front end fixed mounting of flashboard has the flashboard seal receptacle, seted up on the flashboard seal receptacle with the opening that the through-hole link up, the flashboard runs through this opening, is located to be equipped with annular rubber seal on the inner wall in the opening, and the flashboard runs through rubber seal, and rubber seal and flashboard lateral wall contact all around.

And an annular mounting groove is formed in the inner wall of the flashboard sealing seat contacted with the end part of the valve body, a rubber sealing ring is arranged in the mounting groove, and the thickness of the rubber sealing ring is greater than the depth of the mounting groove.

At least two inner convex edges are arranged on the inner wall of the rubber sealing ring in contact with the flashboard, the at least two inner convex edges are arranged at intervals, and the inner convex edges extend along the length direction of the rubber sealing ring and form a closed ring shape.

The two inner convex edges at two sides incline outwards and form a splayed shape.

And the outer side wall of the rubber sealing ring in contact with the inner wall of the mounting groove is provided with two outer convex ridges, the end parts of the two outer convex ridges extend outwards to form a splayed shape, and the outer convex ridges extend along the length direction of the rubber sealing ring to form a closed ring shape.

The outer convex edge and the inner convex edge on the same side form an included angle and are in a transverse V-shaped structure.

The lower portion of the valve body, which is located at the periphery of the round hole, is provided with at least four symmetrically distributed threaded holes, each threaded hole penetrates through the side wall of the guide groove and is in contact with the side wall of the flashboard, each threaded hole is internally and respectively in threaded connection with a jacking bolt body, and when the flashboard is in a closed state, the end portion of the jacking bolt body is abutted to the side wall of the flashboard and pushes up the flashboard support.

And flexible rubber sealing strips arranged along the direction of the guide groove along a U shape are arranged on the top side wall or/and the bottom side wall in the guide groove.

The flexible rubber sealing strips are two and are arranged at adjacent intervals, and the flexible rubber sealing strips are arranged in clamping grooves in the side walls of the top or the bottom in the guide grooves.

And a limiting block is arranged in the tail end of the guide groove opposite to the through hole, when the flashboard is in a closed state, the tail end of the flashboard is positioned in the tail end of the guide groove and pushes against the limiting block, and at the moment, the tail end of the flashboard is arranged at an interval with the inner wall of the tail end of the guide groove.

The front end of the valve body is provided with two guide rods, the tail ends of the two guide rods are fixed on the valve body, the front end of the guide rods extends forwards, the front end of the flashboard is fixed with a stress plate, the top of the stress plate is provided with two sliding sleeves, and the two sliding sleeves are respectively sleeved on the guide rods.

The two oil cylinders are respectively distributed on the left side and the right side of the valve body, and a pushing shaft of each oil cylinder is connected with the stress plate.

The valve body includes the upper part of the body and the lower part of the body, has seted up the trompil that the aperture is the same on the upper part of the body and the lower part of the body, has seted up U type step on the trompil inner wall of upper part of the body and lower part of the body butt joint, and after upper part of the body and lower part of the body butt joint, trompil on the upper part of the body and the lower part of the body constitutes the round hole.

The upper body and the lower body are fixedly connected through bolts.

And a plurality of connecting bolts connected with flanges on an external pipeline are arranged on the outer side walls of the upper body and the lower body around the round holes at equal intervals.

The beneficial effects of the utility model reside in that:

its structural design of this design is novel, and is simple compact, adopts this project organization for current heavy-calibre valve, and this design is under the prerequisite of guarantee safety and structural strength, and weight can reduce more than 2/3, and the transportation of both being convenient for is convenient for again moved, hoist and mount, moreover, this design adopts the hydro-cylinder as power promotion source, can solve current artifical lead screw mode of rotating and waste time, difficultly, problem that the efficiency of construction is low.

Drawings

FIG. 1 is a schematic structural view of a large-diameter valve section of a hydraulic external flashboard according to the present design and a flashboard in a closed state;

FIG. 2 is a schematic diagram of a cross-sectional structure of a large-diameter valve of the hydraulic external gate according to the present embodiment and a structure of the gate in an open state;

FIG. 3 is a schematic cross-sectional view of the rubber seal ring of the present design;

FIG. 4 is a schematic view of a partial structure of the gate plate, the rubber seal ring, the gate plate seal seat and the tightening bolt body in the present design after being engaged;

FIG. 5 is a schematic top view of the present design with the shutter closed;

fig. 6 is a schematic top view of the shutter in the present design in an open state.

Detailed Description

The invention will be further described with reference to the following figures and examples:

example 1: a hydraulic external flashboard large-diameter valve, see fig. 1 to 6.

The hydraulic external flashboard large-caliber valve comprises a valve body and a flashboard 3; the round hole has been seted up on the valve body, and the round hole inner wall is equipped with annular flashboard guide way 17, and guide way 17 is the U-shaped, and a through-hole that runs through the valve body tip and link up with the guide way is seted up to a tip of valve body, in this design, the valve body includes upper part of the body 1 and the lower part of the body 2, and upper part of the body 1 and the lower part of the body 2 are through a plurality of bolt fixed connection, and simultaneously, set up the trompil that the aperture is the same on upper part of the body 1 and the lower part of the body 2, set up U type step on the trompil inner wall of upper part of the body 1 and the lower part of the body 2 butt joint fixed back about upper part of the body 1 and the lower part of.

Furthermore, the design is also provided with a plurality of connecting bolts 15 which are connected with flanges on external pipelines at equal intervals on the outer side walls of the upper body 1 and the lower body 2 which are positioned around the round holes, and the plate valve can be connected on the flanges on the pipelines through the connecting bolts 15.

Further, the gate plate 3 penetrates through the through hole and is positioned in the guide groove 17, and the gate plate 3 can slide in the guide groove; an oil cylinder is fixed outside the valve body, a pushing shaft 18 of the oil cylinder is connected with the end part of the flashboard and can drive the flashboard to move in the guide groove 17, the flashboard is moved in the guide groove 17 through the pushing or pulling action of the pushing shaft 18 of the oil cylinder, and therefore the round hole 20 is opened or closed, and the valve is closed or opened.

Further, this design is still in the front end fixed mounting of flashboard 3 has flashboard seal receptacle 8, prevents through this flashboard seal receptacle 8 that the fluid from flowing through the valve body front end clearance, particularly, this design is in seted up on the flashboard seal receptacle 8 with the opening that the through-hole link up, this moment, flashboard 3 runs through this opening, simultaneously, is located to be equipped with annular rubber seal 9 on the inner wall in the opening, and flashboard 3 runs through rubber seal 9, and rubber seal 9 encircles and embraces on the flashboard lateral wall and with flashboard 3 lateral wall formation face contact all around.

Specifically, an annular mounting groove 21 is formed in the inner wall of the flashboard sealing seat, which is in contact with the end of the valve body 3, the rubber sealing ring 9 is mounted in the mounting groove 21, the thickness of the rubber sealing ring 9 is larger than the depth of the mounting groove 21, and therefore the end of the inner side of the rubber sealing ring 9 protruding out of the mounting groove 21 can be in contact with the peripheral side wall surface of the flashboard 3.

For the rubber sealing ring 9, three inner convex ribs are arranged on the inner wall of the rubber sealing ring 9 in contact with the flashboard 3 at intervals, the inner convex ribs extend along the length direction of the rubber sealing ring and form a closed ring shape, two inner convex ribs 9-2 positioned on two sides incline outwards and form a shape like a Chinese character 'ba', the middle inner convex rib 9-1 is perpendicular to the main body of the rubber sealing ring, the three inner convex ribs are arranged at intervals, three sealing partition walls can be formed in the implementation, the inner convex ribs arranged at intervals can form a buffer area when the rubber sealing ring is extruded in the up-down direction, and the problem that the service life is reduced due to the fact that plane contact excessive extrusion is avoided.

Similarly, the outer side wall of the rubber sealing ring 9 in contact with the inner wall of the mounting groove is provided with two outer convex ridges 9-1, the end parts of the two outer convex ridges 9-1 extend outwards to form a splayed shape, the outer convex ridges extend along the length direction of the rubber sealing ring to form a closed ring shape, included angles are formed between the outer convex ridges and the inner convex ridges on the same side edge and the outer convex ridges are of a transverse V-shaped structure, the V-shaped included angles can also form a buffer area to buffer the compressed rubber sealing ring 9, and the service life of the rubber sealing ring is prolonged. As shown in the figure, the ends of the inner and outer ribs on the rubber sealing ring 9 are arc-shaped and not plane.

Further, for realizing that the flashboard is sealed to form sealedly between flashboard and the guide way inner wall around the round hole 20, this design is in be equipped with on the top lateral wall in the guide way 17 or/and the bottom lateral wall and prolong the flexible rubber sealing strip 19 that the U-shaped set up along the guide way trend, in this design flexible rubber sealing strip 19 is two and adjacent interval setting, flexible rubber sealing strip installs in the draw-in groove of top lateral wall or bottom lateral wall in the guide way.

Further, in order to realize better sealing effect, the design is also provided with four symmetrically distributed threaded holes at the lower part of the valve body at the periphery of the round hole 20, the four threaded holes are distributed at four corners of the flashboard, each threaded hole penetrates through the side wall of the guide groove and is contacted with the lower side wall of the flashboard, a tightening bolt body 7 is respectively in threaded connection in each threaded hole, the tightening bolt body 7 and the threaded holes are matched to form a mechanical jack, in use, when the flashboard is in a closed state, the tightening bolt body 7 is screwed, the end part of the tightening bolt body is enabled to be abutted against the lower side wall of the flashboard and upwards jack the flashboard bracket, at the moment, the flashboard moves upwards to apply pressure on the flexible rubber sealing strip and the rubber sealing ring 9, the flexible rubber sealing strip and the rubber sealing ring 9 are enabled to be tightly matched with the side wall of the flashboard, better sealing effect is realized, and when the flashboard needs, the end part of the jacking bolt body is separated from the flashboard.

Furthermore, the design is also provided with a limit block 5 at the tail end of the guide groove opposite to the through hole, when the flashboard is in a closed state, the tail end of the flashboard is positioned in the tail end of the guide groove and is propped against the limiting block 5, at the moment, the rear end of the shutter is spaced from the inner wall of the rear end of the guide channel and forms a gap 6, which gap 6 plays an important role in the long-term use of the valve, in particular when the valve is closed, the foreign matter is inevitably present in the fluid, which mainly comes from the dirt on the inner wall of the pipeline and the fluid, if the gap is not available, the dirt in the fluid is retained at the bottom of the tail end of the guide groove, and the flashboard is not closed tightly due to long-time pushing and cannot be in a completely closed state, so that the gap is important for long-term use of the valve.

Further, this design is still in the front end of valve body is equipped with two guide bars 12, and the tail end of two guide bars 12 is fixed on the valve body, and its front end extends forward, the front end of flashboard is fixed with atress board 10, and the top of atress board 10 is equipped with two sliding sleeves 11, and two sliding sleeves 11 overlap respectively on the guide bar 12, its the hydro-cylinder is two and distributes respectively in the left and right sides of valve body, and the promotion axle and the atress board of hydro-cylinder are connected. When the flashboard was released, also when the valve was in the open mode, can support the flashboard through guide bar and atress board, avoided the flashboard to stretch out the emergence of the overweight bending deformation condition that leads to because of its flashboard front end dead weight.

The self weight of the DN1800 hydraulic external flashboard large-caliber valve is 6 tons, the valve is placed in the direction shown in the figure when in use, the front end 13 of a supporting rod is supported by a supporting object, the two ends of the valve body are connected with corresponding pipelines through connecting bolts 15, when the flashboard is in a closed state, the state is shown in figure 1, an oil cylinder is in a withdrawing state at the moment, the tail end of the flashboard is propped against a limiting block at the tail end of a guide groove, the top ends of four jacking bolt bodies are propped against the side wall of the flashboard respectively to apply pressure to the flashboard, at the moment, a flexible rubber sealing strip and a rubber sealing ring 9 are tightly matched with the side wall of the flashboard to realize the sealing of the flashboard, when the valve needs to be opened, firstly, the four jacking bolt bodies are required to be unscrewed, the top ends of the four jacking bolt bodies are separated from the side wall, and the push rod of the rear oil cylinder extends forwards and pushes out the flashboard outwards, when the flashboard is pushed out, the two guide rods of the flashboard support the flashboard extending out of the valve body, and then the flashboard is pushed out to enable the valve to be in an open state.

The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above embodiment, and make different extensions and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.

Claims (1)

1. A hydraulic external flashboard large-caliber valve comprises a valve body and a flashboard; the method is characterized in that: the valve body is provided with a round hole, the inner wall of the round hole is provided with an annular flashboard guide groove, one end part of the valve body is provided with a through hole which penetrates through the end part of the valve body and is communicated with the guide groove, the guide groove is rectangular, the flashboard penetrates through the through hole and is positioned in the guide groove, and the flashboard can slide in the guide groove; an oil cylinder is fixed outside the valve body, and a pushing shaft of the oil cylinder is connected with the end part of the flashboard and can drive the flashboard to move in the guide groove;

the front end of the flashboard is fixedly provided with a flashboard sealing seat, the flashboard sealing seat is provided with an opening communicated with the through hole, the flashboard penetrates through the opening, the inner wall in the opening is provided with an annular rubber sealing ring, the flashboard penetrates through the rubber sealing ring, and the rubber sealing ring is contacted with the peripheral side wall of the flashboard;

the inner wall of the rubber sealing ring in contact with the flashboard is provided with at least two inner convex edges which are arranged at intervals, and the inner convex edges extend along the length direction of the rubber sealing ring and form a closed ring shape;

the two inner convex edges positioned at the two sides incline outwards and form a shape like a Chinese character 'ba';

the outer side wall of the rubber sealing ring in contact with the inner wall of the mounting groove is provided with two outer convex edges, the end parts of the two outer convex edges extend outwards to form a splayed shape, and the outer convex edges extend along the length direction of the rubber sealing ring to form a closed ring shape;

an included angle is formed between the outer convex edge and the inner convex edge which are positioned at the same side edge, and the outer convex edge and the inner convex edge are in a transverse V-shaped structure;

the lower part of the valve body, which is positioned at the periphery of the round hole, is provided with at least three symmetrically distributed threaded holes, each threaded hole penetrates through the side wall of the guide groove and is contacted with the lower side wall of the flashboard, each threaded hole is internally and respectively in threaded connection with a jacking bolt body, and when the flashboard is in a closed state, the end part of the jacking bolt body is abutted against the lower side wall of the flashboard and pushes up the flashboard bracket;

flexible rubber sealing strips arranged along the direction of the guide groove along a U shape are arranged on the top side wall or/and the bottom side wall in the guide groove;

a limiting block is arranged in the tail end of the guide groove opposite to the through hole, when the flashboard is in a closed state, the tail end of the flashboard is positioned in the tail end of the guide groove and is propped against the limiting block, and at the moment, the tail end of the flashboard and the inner wall of the tail end of the guide groove are arranged at intervals;

the front end of the valve body is provided with two guide rods, the tail ends of the two guide rods are fixed on the valve body, the front end of the guide rods extends forwards, the front end of the flashboard is fixed with a stress plate, the top of the stress plate is provided with two sliding sleeves, and the two sliding sleeves are respectively sleeved on the guide rods.

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