CN113819258A

CN113819258A - Self-expansion type sealing ball valve based on high-temperature medium

Info

Publication number: CN113819258A
Application number: CN202110846184.3A
Authority: CN
Inventors: 闫琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-12-21

Abstract

The invention discloses a self-expanding sealing ball valve based on a high-temperature medium, which belongs to the technical field of ball valves and can absorb the heat of the high-temperature medium by arranging a heat-conducting fin at an outlet of a valve body, then the heat-variable support column is conducted to the inner side of the heat-insulation rubber ring, the heat-variable support column for supporting the shape of the heat-insulation rubber ring is firstly softened to present a deformable state, secondly, the expansion outer ball can trigger the expansion action after being heated, so that the heat insulation rubber ring is integrally expanded to closely attach the valve core, meanwhile, the heat-variable support column is pulled to carry out deformation adaptation, the high-temperature medium can be interrupted without conveying heat conduction along with the closing of the valve core, and after the temperature in the heat-insulating rubber ring is gradually reduced, when the expansion outer ball does not completely recover the initial size, the thermal deformation support column is cured again to support the expanded heat insulation rubber ring, so that high-strength sealing is realized, and the medium leakage phenomenon is not easy to occur.

Description

Self-expansion type sealing ball valve based on high-temperature medium

Technical Field

The invention relates to the technical field of ball valves, in particular to a self-expanding sealing ball valve based on a high-temperature medium.

Background

The ball valve, the opening and closing piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The hard seal V-shaped ball valve can also be used for regulating and controlling fluid, wherein a V-shaped ball core of the hard seal V-shaped ball valve and a metal valve seat of the build-up welding hard alloy have strong shearing force, and the hard seal V-shaped ball valve is particularly suitable for media containing fibers, tiny solid particles and the like. The multi-way ball valve can flexibly control the confluence, the diversion and the switching of the flow direction of the medium on the pipeline, and can close any channel to connect the other two channels. The valve of this type should be generally installed horizontally in the pipeline. The ball valve is divided into: pneumatic ball valves, electric ball valves, manual ball valves.

The ball valve is mainly used for cutting off, distributing and changing the flow direction of a medium in a pipeline, and can be closed tightly only by rotating 90 degrees and a small rotating moment. The ball valve is most suitable for being used as a switch and a stop valve, namely a V-shaped ball valve. Besides the parameters of the pipeline, the electric valve should be particularly used under the environmental conditions, and the usage status of the electric valve is greatly influenced by the usage environment because the electric device in the electric valve is an electromechanical device. In general, a power ball valve and a butterfly valve are used in the following environments with special attention.

When high-temperature media are conveyed, the sealing performance of the ball valve is greatly influenced, and the sealing requirement is difficult to achieve only by means of the pressure of the media, so that the phenomenon of media leakage often occurs.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a self-expanding sealing ball valve based on a high-temperature medium, which can absorb the heat of the high-temperature medium by arranging a heat-conducting fin at the outlet of a valve body, then the heat-variable support column is conducted to the inner side of the heat-insulation rubber ring, the heat-variable support column for supporting the shape of the heat-insulation rubber ring is firstly softened to present a deformable state, secondly, the expansion outer ball can trigger the expansion action after being heated, so that the heat insulation rubber ring is integrally expanded to closely attach the valve core, meanwhile, the heat-variable support column is pulled to carry out deformation adaptation, the high-temperature medium can be interrupted without conveying heat conduction along with the closing of the valve core, and after the temperature in the heat-insulating rubber ring is gradually reduced, when the expansion outer ball does not completely recover the initial size, the thermal deformation support column is cured again to support the expanded heat insulation rubber ring, so that high-strength sealing is realized, and the medium leakage phenomenon is not easy to occur.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A self-expanding sealing ball valve based on high-temperature media comprises a valve body for conveying the high-temperature media, a valve core is movably arranged in the valve body, the outlet of the valve body is provided with a heat insulation rubber ring matched with the valve core, the outlet of the valve body is also provided with a heat conduction sheet, the heat insulation rubber ring is of a hollow structure, the heat conduction sheet is fixedly connected with a heat conduction net, the heat conducting net extends to the inner side of the heat insulating rubber ring, a heat change support column pointing to the valve core is fixedly connected in the heat insulating rubber ring, the heat-variable support column comprises a fulcrum end, a stretching pipe and a support cover which are sequentially connected, the fulcrum end is fixedly connected with one end, far away from the valve core, in the heat-insulating rubber ring, the support cover is fixedly connected to one end, close to the valve core, of the heat insulation rubber ring, the stretching pipe is fixedly connected between the fulcrum end and the support cover, and a plurality of expansion outer balls are further mounted in the heat insulation rubber ring in an embedded mode.

Furthermore, the supporting cover is distributed along the heat insulation rubber ring in an annular array mode, the supporting cover is sequentially connected end to end, the supporting cover after curing can integrally support the heat insulation rubber ring, and the phenomenon that the medium leaks due to the fact that local sealing strength is not enough is avoided.

Furthermore, one end of the support cover, which is close to the heat insulation rubber ring, is fixedly connected with a rejection block, a heat conduction wire is fixedly connected between the rejection block and the fulcrum end, the heat conduction wire is inserted into the stretching pipe, and the heat conduction wire can fully heat the hot melt material in the stretching pipe and the support cover to force the hot melt material to be fully melted to flow.

Furthermore, the fulcrum end and the repelling block are made of magnetic materials, magnetic repelling action is kept between the fulcrum end and the repelling block, the heat change supporting column can be assisted to support the heat insulation rubber ring by utilizing the magnetic repelling action between the fulcrum end and the repelling block, and the retraction phenomenon is not easy to occur immediately after cooling.

Furthermore, the stretching pipe is made of flexible materials, the supporting cover is made of hard materials, hot melt materials are filled in the stretching pipe and the supporting cover, the hot melt materials have certain strength after solidification to provide a supporting effect, and the hot melt materials have fluidity after being heated and melted, so that the stretching flow of the stretching pipe is met.

Furthermore, the melting point of the hot melt material is higher than 100 ℃ and lower than the temperature of the high-temperature medium, and the volume of the hot melt material is increased when water is heated and evaporated into water vapor, so that the expansion action is triggered, and therefore, when the hot melt material is melted and is reduced to the melting point temperature again, the water vapor is not condensed into liquid water, so that the expansion effect is obviously reduced, and the hot melt material can be solidified to realize the hardening support of the heat change support column when no obvious shrinkage exists after the expansion of the expansion outer ball.

Furthermore, a plurality of expansion inner balls are filled in the supporting cover, each expansion inner ball comprises an outer shape control ball shell and an inner expansion ball membrane, and the inner expansion ball membrane is positioned on the inner side of the outer shape control ball shell.

Further, outer accuse shape spherical shell adopts stereoplasm porous material to make, it has hot melt material to fill between outer accuse shape spherical shell and the interior inflation spherical membrane, interior inflation spherical membrane adopts elastic material to make, interior inflation spherical membrane intussuseption is filled with water and hydrogen, and the ball is being heated in the inflation, and the evaporation of water in the interior inflation spherical membrane realizes showing the increase of volume for vapor to make interior inflation spherical membrane inflation extrude the hot melt material in the outer accuse shape spherical shell, lead to the volume of increase to fill in the support cover after the thermal-insulated rubber circle inflation, avoid appearing the phenomenon that local filling is not closely knit, lead to the support intensity decline of support cover.

Furthermore, the outer expansion ball comprises an outer expansion ball membrane and an inner shape-controlled ball shell, the outer expansion ball membrane is coated at the outer end of the inner shape-controlled ball shell, and the outer expansion ball membrane is in close contact with the inner walls of the two sides of the heat insulation rubber ring.

Furthermore, the outer expansion spherical membrane is made of an elastic material, the inner control spherical shell is made of a hard porous material, water and hydrogen are filled in the inner control spherical shell, the internal air pressure of the same inner control spherical shell is increased after the inner control spherical shell is heated, then the outer expansion spherical membrane is forced to expand and jack up the heat insulation rubber ring, the heat insulation rubber ring and the valve core are tightly attached, meanwhile, the inner control spherical shell is high in strength, the compression phenomenon cannot occur, and the basic size of the heat insulation rubber ring can be maintained.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme can be through setting up the heat conduction piece in the exit of valve body and absorbing the heat of high temperature medium, then it is inboard to conduct to thermal-insulated rubber circle, the thermal change that supports thermal-insulated rubber circle shape props the post and at first softens and presents deformable state, secondly the inflation can trigger the inflation action after the outer ball of inflation is heated, make the whole inflation of thermal-insulated rubber circle paste to cover closely knit, the adaptation of deformation is carried out to the thermal change prop post simultaneously, along with the closing of case, the high temperature medium is not carried the heat conduction again and also can be interrupted, the temperature in the thermal-insulated rubber circle reduces the back gradually, the thermal change props the post resolidification and supports the thermal-insulated rubber circle after the inflation when the outer ball of inflation has not recovered initial dimension completely, thereby realize the sealed of high strength, the difficult medium leakage phenomenon that appears.

(2) The supporting cover is distributed along the heat-insulating rubber ring in an annular array mode, the supporting cover is connected end to end in sequence, the supporting cover after curing can integrally support the heat-insulating rubber ring, and the phenomenon that the medium leaks due to the fact that local sealing strength is not enough is avoided.

(3) The melting point of the hot melt material is higher than 100 ℃, and is lower than the temperature of the high-temperature medium, the volume of the hot melt material is increased when water is heated and evaporated into water vapor, and therefore expansion action is triggered, when the hot melt material is melted and is reduced to the melting point temperature again, the water vapor is not condensed into liquid water, so that the expansion effect is obviously reduced, and the hot melt material can be solidified to realize the hardening support of the heat-variable support column after the expansion outer ball is expanded without obvious shrinkage.

(4) Outer accuse shape spherical shell adopts stereoplasm porous material to make, it has hot melt material to fill between outer accuse shape spherical shell and the interior inflation spherical membrane, interior inflation spherical membrane adopts elastic material to make, interior inflation spherical membrane intussuseption is filled with water and hydrogen, the ball is being heated the back in the inflation, the water evaporation in the interior inflation spherical membrane realizes the showing increase of volume for vapor, thereby make interior inflation spherical membrane inflation extrude the hot melt material in the outer accuse shape spherical shell, lead to the volume of increase to fill in the support cover after the thermal-insulated rubber circle inflation, avoid appearing the phenomenon that local filling is not closely knit, lead to the decline of support intensity of support cover.

(5) The outer expansion spherical shell is made of elastic materials, the inner control spherical shell is made of hard porous materials, water and hydrogen are filled in the inner control spherical shell, the internal air pressure of the same inner control spherical shell after being heated can be increased, then the outer expansion spherical shell is forced to expand and jack up the heat insulation rubber ring, the heat insulation rubber ring is tightly attached to the valve core, meanwhile, the strength of the inner control spherical shell is high, the compression phenomenon cannot occur, and the basic size of the heat insulation rubber ring can be maintained.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a vertical cross-sectional view of the heat-insulating rubber ring of the present invention;

FIG. 3 is a schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of a heat stake according to the present invention;

FIG. 5 is a cross-sectional view of the heat insulating rubber ring of the present invention;

FIG. 6 is a schematic structural view of an inflatable outer bulb of the present invention;

FIG. 7 is a schematic structural view of an inflatable inner balloon of the present invention;

FIG. 8 is a schematic structural view of a heat stake of the present invention before and after being heated;

FIG. 9 is a schematic structural view of the heat-insulating rubber ring of the present invention before and after heating;

fig. 10 is a schematic diagram of a medium leakage structure at a sealing ring in the prior art.

The reference numbers in the figures illustrate:

the heat-insulation valve comprises a valve body 1, a valve core 2, a heat-insulation rubber ring 3, a heat-conducting fin 4, a heat-change support column 5, a fulcrum end 51, a stretching pipe 52, a support cover 53, an expansion outer ball 6, an expansion outer ball film 61, an inner shape-control ball shell 62, a heat-conducting net 7, an expansion inner ball 8, an outer shape-control ball shell 81, an inner expansion ball film 82, a repulsion block 9 and a heat-conducting wire 10.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-3, a self-expanding sealing ball valve based on high temperature medium comprises a valve body 1 for conveying high temperature medium, a valve core 2 is movably installed in the valve body 1, a heat insulation rubber ring 3 matched with the valve core 2 is installed at an outlet of the valve body 1, a heat conduction sheet 4 is further installed at an outlet of the valve body 1, the heat insulation rubber ring 3 is of a hollow structure, a heat conduction net 7 is fixedly connected to the heat conduction sheet 4, the heat conduction net 7 extends to the inner side of the heat insulation rubber ring 3, a heat expansion column 5 pointing to the valve core 2 is fixedly connected in the heat insulation rubber ring 3, the heat expansion column 5 comprises a fulcrum end 51, a stretching pipe 52 and a support cover 53 which are sequentially connected, the fulcrum end 51 is fixedly connected to one end of the heat insulation rubber ring 3 far away from the valve core 2, the support cover 53 is fixedly connected to one end of the heat insulation rubber ring 3 close to the valve core 2, the stretching pipe 52 is fixedly connected between the fulcrum end 51 and the support cover 53, a plurality of expansion outer balls 6 are also embedded in the heat insulation rubber ring 3.

Referring to fig. 5, the supporting covers 53 are distributed in an annular array along the heat-insulating rubber ring 3 and are sequentially connected end to end, and the cured supporting covers 53 can integrally support the heat-insulating rubber ring 3, thereby avoiding the occurrence of a medium leakage phenomenon caused by insufficient local sealing strength.

Referring to fig. 4, a repelling block 9 is fixedly connected to one end of the supporting cover 53 close to the heat-insulating rubber ring 3, a heat conducting wire 10 is fixedly connected between the repelling block 9 and the fulcrum end 51, and the heat conducting wire 10 is inserted into the stretching tube 52, so that the heat conducting wire 10 can sufficiently heat the hot-melt material in the stretching tube 52 and the supporting cover 53 to force the hot-melt material to be sufficiently melted for flowing.

The fulcrum end 51 and the repelling block 9 are made of magnetic materials, magnetic repulsion is kept between the fulcrum end 51 and the repelling block 9, the heat change supporting column 5 can be assisted to support the heat insulation rubber ring 3 by utilizing the magnetic repulsion between the fulcrum end 51 and the repelling block 9, and the retraction phenomenon is not easy to occur immediately after cooling.

The stretching pipe 52 is made of flexible materials, the supporting cover 53 is made of hard materials, hot melt materials are filled in the stretching pipe 52 and the supporting cover 53, the hot melt materials have certain strength after solidification to provide a supporting effect, and the hot melt materials have fluidity after being heated and melted, so that the stretching flow of the stretching pipe 52 is met.

The melting point of the hot melt material is higher than 100 ℃, and is lower than the temperature of the high-temperature medium, the volume of the hot melt material is increased when water is heated and evaporated into water vapor, and therefore expansion action is triggered, when the hot melt material is melted and is reduced to the melting point temperature again, the water vapor is not condensed into liquid water, so that the expansion effect is obviously reduced, and the hot melt material can be solidified to realize the hardening support of the heat change support column 5 when no obvious shrinkage exists after the expansion of the expansion outer ball 6.

The support cover 53 is further filled with a plurality of expansion inner balls 8, each expansion inner ball 8 comprises an outer shape control ball shell 81 and an inner expansion ball membrane 82, and the inner expansion ball membrane 82 is located on the inner side of the outer shape control ball shell 81.

Referring to fig. 7, the outer controlled spherical shell 81 is made of a hard porous material, a hot melt material is filled between the outer controlled spherical shell 81 and the inner expanded spherical membrane 82, the inner expanded spherical membrane 82 is made of an elastic material, water and hydrogen are filled in the inner expanded spherical membrane 82, after the expanded inner ball 8 is heated, water in the inner expanded spherical membrane 82 is evaporated into water vapor to realize a significant increase of the volume, so that the inner expanded spherical membrane 82 expands to extrude the hot melt material in the outer controlled spherical shell 81, the volume increased in the support cover 53 after the thermal insulation rubber ring 3 expands is filled, and the phenomenon that local filling is not dense is avoided, and the support strength of the support cover 53 is reduced.

Referring to fig. 6, the outer inflatable ball 6 includes an outer inflatable ball film 61 and an inner controlled ball casing 62, the outer inflatable ball film 61 covers the outer end of the inner controlled ball casing 62, and the outer inflatable ball film 61 is in close contact with the inner walls of the two sides of the heat-insulating rubber ring 3.

The outer expansion spherical film 61 is made of elastic materials, the inner control spherical shell 62 is made of hard porous materials, water and hydrogen are filled in the inner control spherical shell 62, the internal air pressure of the same inner control spherical shell 62 after being heated can be increased, then the outer expansion spherical film 61 is forced to expand and jack up the heat insulation rubber ring 3, the heat insulation rubber ring 3 is tightly attached to the valve core 2, meanwhile, the strength of the inner control spherical shell 62 is high, the compression phenomenon cannot occur, and the basic size of the heat insulation rubber ring 3 can be maintained.

Referring to fig. 8-9, in the invention, heat of a high-temperature medium can be absorbed by arranging a heat conducting sheet 4 at an outlet of a valve body 1 and then is conducted to the inner side of a heat insulation rubber ring 3, a heat change supporting column 5 supporting the shape of the heat insulation rubber ring 3 is firstly softened to be in a deformable state, and then an expansion action can be triggered after an expansion outer ball 6 is heated, so that the heat insulation rubber ring 3 is integrally expanded to closely cover a valve core 2, and meanwhile, the heat change supporting column 5 is pulled to carry out deformation adaptation, heat conduction can be interrupted when the high-temperature medium is not conveyed any more along with the closing of the valve core 2, after the temperature in the heat insulation rubber ring 3 is gradually reduced, the heat change supporting column 5 is re-solidified to support the expanded heat insulation rubber ring 3 when the expansion outer ball 6 does not completely recover the initial size, thereby realizing high-strength sealing and preventing the medium leakage phenomenon.

It should be noted that the present invention is also applicable to the environment of transporting common media, but active heating is realized by replacing the heat conducting sheet 4 with an electric heating wire, and the effect of enhancing sealing can also be realized.

The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a self-expanding seals ball valve based on high temperature medium, is including carrying high temperature medium's valve body (1), movable mounting has case (2) in valve body (1), install in the exit of valve body (1) and case (2) assorted thermal-insulated rubber circle (3), its characterized in that: a heat conducting sheet (4) is further installed at the outlet of the valve body (1), the heat insulating rubber ring (3) is of a hollow structure, a heat conducting net (7) is fixedly connected onto the heat conducting sheet (4), the heat conducting net (7) extends to the inner side of the heat insulating rubber ring (3), a heat change support column (5) pointing to the valve core (2) is fixedly connected in the heat insulating rubber ring (3), the heat-variable support column (5) comprises a fulcrum end (51), a stretching pipe (52) and a support cover (53) which are connected in sequence, the fulcrum end (51) is fixedly connected with one end of the heat-insulating rubber ring (3) far away from the valve core (2), the supporting cover (53) is fixedly connected with one end of the heat-insulating rubber ring (3) close to the valve core (2), the stretching tube (52) is fixedly connected between the fulcrum end (51) and the support cover (53), a plurality of expansion outer balls (6) are also embedded in the heat insulation rubber ring (3).

2. The high temperature media based self-expanding sealing ball valve of claim 1, wherein: the supporting covers (53) are distributed in an annular array along the heat insulation rubber ring (3) and are sequentially connected end to end.

3. The high temperature media based self-expanding sealing ball valve of claim 2, wherein: one end of the support cover (53) close to the heat insulation rubber ring (3) is fixedly connected with a rejection block (9), a heat conduction wire (10) is fixedly connected between the rejection block (9) and the fulcrum end (51), and the heat conduction wire (10) is inserted into the stretching pipe (52).

4. The high temperature media based self-expanding sealing ball valve of claim 3, wherein: the fulcrum end (51) and the repelling block (9) are both made of magnetic materials, and the magnetic repelling effect is kept between the fulcrum end and the repelling block.

5. The high temperature media based self-expanding sealing ball valve of claim 3, wherein: the stretching pipe (52) is made of flexible materials, the supporting cover (53) is made of hard materials, and hot melt materials are filled in the stretching pipe (52) and the supporting cover (53).

6. The high temperature media-based self-expanding sealing ball valve of claim 5, wherein: the melting point of the hot melt material is higher than 100 ℃ and lower than the temperature of the high temperature medium.

7. The high temperature media-based self-expanding sealing ball valve of claim 5, wherein: the support cover (53) is also filled with a plurality of expansion inner balls (8), each expansion inner ball (8) comprises an outer shape control spherical shell (81) and an inner expansion spherical membrane (82), and the inner expansion spherical membrane (82) is located on the inner side of the outer shape control spherical shell (81).

8. The high temperature media-based self-expanding sealing ball valve of claim 7, wherein: the outer control-shaped spherical shell (81) is made of hard porous materials, hot melt materials are filled between the outer control-shaped spherical shell (81) and the inner expansion spherical membrane (82), the inner expansion spherical membrane (82) is made of elastic materials, and water and hydrogen are filled in the inner expansion spherical membrane (82).

9. The high temperature media based self-expanding sealing ball valve of claim 1, wherein: the outer expansion ball (6) comprises an outer expansion ball membrane (61) and an inner shape control ball shell (62), the outer expansion ball membrane (61) is wrapped at the outer end of the inner shape control ball shell (62), and the outer expansion ball membrane (61) is in close contact with the inner walls of the two sides of the heat insulation rubber ring (3).

10. The high temperature media-based self-expanding sealing ball valve of claim 9, wherein: the outer expansion spherical membrane (61) is made of an elastic material, the inner shape-control spherical shell (62) is made of a hard porous material, and water and hydrogen are filled in the inner shape-control spherical shell (62).