CN113357398B

CN113357398B - Intelligent ball valve based on fluid pressure

Info

Publication number: CN113357398B
Application number: CN202110914341.XA
Authority: CN
Inventors: 沈剑标
Original assignee: Jiangsu Intelligent Special Valve Co ltd
Current assignee: Jiangsu Intelligent Special Valve Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2021-10-08
Anticipated expiration: 2041-08-10
Also published as: CN113357398A

Abstract

The invention discloses an intelligent ball valve based on fluid pressure, belonging to the technical field of ball valves, the invention can utilize the fluid pressure to act on a valve core by arranging a hollow push column in the valve core, push the valve core backwards to realize high-strength sealing with a composite rubber ring at an outlet, simultaneously monitor the flow through a flow sensor, thereby calculating the pressure applied to the hollow push column, when the fluid pressure is insufficient, the hollow push column is actively adsorbed by starting an electromagnet in the composite rubber ring, thereby still keeping good sealing effect by matching with the fluid pressure, the composite rubber ring is fully jointed by triggering expansion action through internal oil after being extruded, and an oil layer is actively formed for temporary sealing after the oil is accidentally leaked, compared with the existing ball valve sealing mode, the valve core in the invention can actively match and seal with the composite rubber ring, the fluid medium is not easy to leak due to deformation and gaps.

Description

Intelligent ball valve based on fluid pressure

Technical Field

The invention relates to the technical field of ball valves, in particular to an intelligent ball valve based on fluid pressure.

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.

The sealing performance of the ball valve is often determined by the sealing effect of the sealing ring, and then along with the working time, the sealing ring is often deformed or has a gap phenomenon, so that the sealing performance of the ball valve is failed, and the condition of fluid medium leakage is caused.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide an intelligent ball valve based on fluid pressure, which can utilize the fluid pressure to act on a valve core to push the valve core backwards to realize high-strength sealing with a composite rubber ring at an outlet by a mode of arranging a hollow push column in the valve core, and simultaneously monitor the flow through a flow sensor so as to calculate the pressure applied to the hollow push column.

2. Technical scheme

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

The utility model provides an intelligent ball valve based on fluid pressure, includes the valve body, movable mounting has the case in the valve body, the exit of valve body install with case assorted compound rubber circle, valve body outer end fixed mounting has the control box, install flow sensor in the valve body, the inner fixedly connected with cavity of case pushes away the post, the cavity pushes away the post and includes cavity cylinder, magnetic pressure ball and pressure sensor, the entrance point cross-sectional shape that the cavity cylinder is close to the valve body is streamlined, the pressure tank that matches with the magnetic pressure ball is seted up to the entrance point that the cavity cylinder is close to the valve body, magnetic pressure ball movable mosaic is in the pressure tank, pressure sensor installs between magnetic pressure ball and pressure tank, install the electro-magnet in the compound rubber circle, flow sensor, pressure sensor and electro-magnet all are connected with the control box.

Furthermore, the hollow cylinder and the valve core are integrally formed, and the magnetic pressure ball is made of a ferromagnetic material.

Furthermore, the compound rubber ring comprises a fixed base, an inner sealing layer and an outer sealing layer which are sequentially connected, the outer sealing layer is positioned on one side close to the valve core, the fixed base plays a role in supporting a foundation and accommodating and installing the electromagnet, and the inner sealing layer and the outer sealing layer are matched with each other to play a role in sealing the valve core.

Furthermore, a liquid storage cavity is reserved between the inner sealing layer and the outer sealing layer, a plurality of pressure expansion balls which are uniformly distributed are fixedly connected between the inner sealing layer and the outer sealing layer, oil is filled in the liquid storage cavity, the inner sealing layer and the outer sealing layer are shaped by the pressure expansion balls, and meanwhile, the oil is extruded and expanded by the deformable effect of the pressure expansion balls, so that the area, which is not connected with the pressure expansion balls, of the outer sealing layer is forced to be fully attached to the valve core, and local gaps are not easy to appear.

Furthermore, the fixed base is made of hard materials, and the inner sealing layer and the outer sealing layer are both made of elastic sealing materials.

Further, the ball that expands of pressure includes a pair of location hemisphere, middling pressure cover and many stretch yarns, and is a pair of location hemisphere symmetric connection is at the stretch yarn both ends to respectively with external seal layer and inner seal layer fixed connection, stretch yarn evenly inlays in middling pressure cover inboard, it has oil to fill equally in the space that location hemisphere and middling pressure cover enclose, the oil leak hole has been seted up on the middling pressure cover, after receiving the extrusion of case, the location hemisphere extrudees the middling pressure cover in the middle of to, forces inside oil to extrude the back and mix with outside oil, forms the effect of inflation, guarantees that the external seal layer can fully laminate with the case to improve sealed effect.

Furthermore, the locating hemisphere is made of hard materials, and the medium-pressure sleeve and the elastic wire are made of elastic materials.

Further, outer edge fixedly connected with oil seal ring of external seal layer, oil seal ring includes cavity ring shell, meets the one end that the oil inflation piece is connected near the case in cavity ring shell inboard, flexible waterproof membrane fixed connection is in cavity ring shell middle part, the spine evenly connected is met the one end that the oil inflation piece is close to flexible waterproof membrane, when the unexpected rupture of external seal layer leads to oil leakage, is absorbed when the oil seal ring region of process to trigger the expansion action that meets the oil inflation piece, and then promote the flexible waterproof membrane of spine puncture, realize the mixing of cavity ring shell internal material, utilize the expansion that meets the oil inflation piece to form the shutoff effect on the one hand, on the other hand triggers the cooling action and makes oil solidify and reduce mobility, thereby form the oil film and carry out the leakproofness.

Furthermore, the hollow annular shell is made of a hard material, a notch is reserved at one end close to the valve core, the oil swelling block is made of an oil absorption swelling material, the valve core cannot interfere with the oil swelling block even if being extruded to the hollow annular shell in a normal state, and the oil is absorbed by the oil swelling block through the notch only when oil leaks, so that the oil is promoted to swell, and the flexible waterproof membrane is triggered to puncture when plugging.

Furthermore, the flexible waterproof membrane is far away from the space intussuseption that meets oil inflation piece one side and cavity ring shell and forms and is filled with water, the flexible waterproof membrane is close to and meets oil inflation piece one side and the space intussuseption that cavity ring shell formed and is filled with the niter, punctures back water and niter at flexible waterproof membrane and mixes, and the niter can absorb a large amount of heats formation cooling when dissolving in water, and the mobility that solidifies gradually after the cooling reduces to supplementary sealing, the difficult condition that fluid medium leaked appears.

3. Advantageous effects

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

(1) according to the scheme, the hollow push column is arranged in the valve core, fluid pressure acts on the valve core, the hollow push column is pushed backwards to be sealed with the composite rubber ring at the outlet, the flow is monitored through the flow sensor, the pressure applied to the hollow push column is calculated, when the fluid pressure is insufficient, the electromagnet in the composite rubber ring is started to actively adsorb the hollow push column, and therefore the hollow push column can still keep a good sealing effect when being matched with the fluid pressure.

(2) The compound rubber circle is including the unable adjustment base, interior sealing layer and the outer sealing layer that connect gradually, and the outer sealing layer is located the one side that is close to the case, and unable adjustment base plays basic supporting role to hold the installation to the electro-magnet, interior sealing layer and outer sealing layer mutually support and play the sealed effect to the case.

(3) The liquid storage cavity is reserved between the inner sealing layer and the outer sealing layer, the multiple uniformly-distributed pressure expansion balls are fixedly connected between the inner sealing layer and the outer sealing layer, oil is filled in the liquid storage cavity, the inner sealing layer and the outer sealing layer are shaped by the aid of the pressure expansion balls, meanwhile, the oil is extruded and expanded by the aid of deformable action of the pressure expansion balls, the region, which is not connected with the pressure expansion balls, of the outer sealing layer is forced to be fully attached to the valve core, and local gaps are not prone to occurring.

(4) The pressure ball that expands includes a pair of location hemisphere, well pressure cover and many elastic filaments, a pair of location hemisphere symmetric connection is at the elastic filaments both ends, and respectively with external seal layer and inner seal layer fixed connection, the elastic filaments is evenly inlayed in well pressure cover inboard, it has oil to fill in the space that location hemisphere and well pressure cover enclose equally, the oil leak hole has been seted up on the well pressure cover, after receiving the extrusion of case, the location hemisphere extrudees the well pressure cover in centre, force inside oil to extrude the back and mix with outside oil, form expanded effect, guarantee that the external seal layer can fully laminate with the case, in order to improve sealed effect.

(5) Outer edge fixedly connected with oil seal ring of external seal, oil seal ring includes the cavity ring shell, meet the oil inflation piece, flexible waterproof membrane and a plurality of spine, meet the oil inflation piece and connect in the one end that cavity ring shell inboard is close to the case, flexible waterproof membrane fixed connection is in cavity ring shell middle part, spine evenly connect in the one end that meets the oil inflation piece and be close to flexible waterproof membrane, when the unexpected rupture of outer sealing layer leads to oil leakage, absorb when passing through the oil seal ring region, and trigger the inflation action that meets the oil inflation piece, and then promote the spine and pierce flexible waterproof membrane, realize the mixing of cavity ring shell internal material, the inflation that utilizes the oil inflation piece that meets the oil inflation forms the shutoff effect on the one hand, on the other hand triggers the cooling action and makes oil solidify and reduce mobility, thereby it carries out the leakproofness to form the oil film.

(6) The flexible waterproof membrane is far away from to meet the space intussuseption that oil inflation piece one side and cavity ring shell formed and is filled with water, and the flexible waterproof membrane is close to meet the space intussuseption that oil inflation piece one side and cavity ring shell formed and is filled with the saltpeter, and water and saltpeter mix after flexible waterproof membrane is punctured, and the saltpeter can absorb a large amount of heats formation cooling when dissolving in water, and the mobility reduces after the cooling gradually solidifies to oil to supplementary sealing, the difficult condition that fluid medium leaked that appears.

Drawings

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

FIG. 2 is a schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic diagram of a prior art ball valve;

FIG. 4 is a schematic structural view of a composite rubber ring in example 2 of the present invention;

FIG. 5 is a schematic view of the structure at B in FIG. 4;

FIG. 6 is a schematic view of the structure of the inflatable ball of the present invention;

FIG. 7 is a schematic structural view of the outer seal layer before and after extrusion of the press expansion ball of the present invention;

FIG. 8 is a schematic view of the structure of the oil seal ring of the present invention;

FIG. 9 is a cross-sectional view of the oil seal ring of the present invention;

fig. 10 is a schematic view showing the structure of formation of an oil layer according to the present invention.

The reference numbers in the figures illustrate:

the valve comprises a valve body 1, a valve core 2, a composite rubber ring 3, a fixed base 31, an inner sealing layer 32, an outer sealing layer 33, a control box 4, a hollow push column 5, a hollow cylinder 51, a magnetic pressure ball 52, a pressure sensor 53, a pressure expansion ball 6, a positioning hemisphere 61, a middle pressure sleeve 62, an elastic wire 63, an oil seal ring 7, a hollow ring shell 71, an oil expansion block 72, a flexible waterproof membrane 73 and a sharp thorn 74.

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, an intelligent ball valve based on fluid pressure comprises a valve body 1, a valve core 2 is movably installed in the valve body 1, a composite rubber ring 3 matched with the valve core 2 is installed at an outlet of the valve body 1, a control box 4 is fixedly installed at an outer end of the valve body 1, a flow sensor is installed in the valve body 1, a hollow push column 5 is fixedly connected at an inner end of the valve core 2, the hollow push column 5 comprises a hollow cylinder 51, a magnetic pressure ball 52 and a pressure sensor 53, a cross section of the hollow cylinder 51 close to an inlet end of the valve body 1 is streamline, a pressure groove matched with the magnetic pressure ball 52 is formed at the inlet end of the hollow cylinder 51 close to the valve body 1, the magnetic pressure ball 52 is movably embedded in the pressure groove, the pressure sensor 53 is installed between the magnetic pressure ball 52 and the pressure groove, an electromagnet and the flow sensor are installed in the composite rubber ring 3, the pressure sensor 53 and the electromagnet are connected to the control box 4.

The hollow cylinder 51 and the valve core 2 are integrally formed, and the magnetic pressure ball 52 is made of ferromagnetic material.

Example 2:

referring to fig. 4-5, compared with embodiment 1, the common sealing ring is replaced, the composite rubber ring 3 includes a fixed base 31, an inner sealing layer 32, and an outer sealing layer 33, which are connected in sequence, the outer sealing layer 33 is located at a side close to the valve core 2, the fixed base 31 plays a role of supporting a foundation and accommodates and mounts the electromagnet, and the inner sealing layer 32 and the outer sealing layer 33 cooperate with each other to play a role of sealing the valve core 2.

A liquid storage cavity is reserved between the inner sealing layer 32 and the outer sealing layer 33, a plurality of uniformly distributed pressure expansion balls 6 are fixedly connected between the inner sealing layer 32 and the outer sealing layer 33, oil is filled in the liquid storage cavity and can be peanut oil, the oil with special properties is below 12 ℃ of the ambient temperature, a semi-solidification phenomenon can occur, the lower the temperature is, the more the temperature is, the lower the temperature is, the temperature below 2 ℃ can be completely solidified, the inner sealing layer 32 and the outer sealing layer 33 are shaped by the pressure expansion balls 6, meanwhile, the oil is extruded and expanded by the deformable effect of the pressure expansion balls, the area, which is not connected with the pressure expansion balls 6, of the outer sealing layer 33 is forced to be fully attached to the valve core 2, and local gaps are not prone to occurring.

The fixed base 31 is made of hard material, and the inner sealing layer 32 and the outer sealing layer 33 are both made of elastic sealing material.

Referring to fig. 6-7, the pressure expansion ball 6 includes a pair of positioning hemispheres 61, a middle pressure sleeve 62 and a plurality of elastic threads 63, the pair of positioning hemispheres 61 are symmetrically connected to two ends of the elastic threads 63 and are respectively fixedly connected to the outer sealing layer 33 and the inner sealing layer 32, the elastic threads 63 are uniformly embedded inside the middle pressure sleeve 62, the space enclosed by the positioning hemispheres 61 and the middle pressure sleeve 62 is also filled with oil, the middle pressure sleeve 62 is provided with oil leakage holes, after being squeezed by the valve core 2, the positioning hemispheres 61 squeeze the middle pressure sleeve 62, so that the squeezed oil inside is mixed with the oil outside to form an expansion effect, and the outer sealing layer 33 can be fully attached to the valve core 2, thereby improving the sealing effect.

The positioning hemisphere 61 is made of hard material, and the middle pressure sleeve 62 and the elastic wire 63 are made of elastic material.

Compared with the embodiment 1, the composite rubber ring 3 in the embodiment has higher sealing strength and obviously prolonged service life.

Example 3:

referring to fig. 8-10, the outer edge of the outer sealing layer 33 is fixedly connected with an oil seal ring 7, the oil seal ring 7 includes a hollow annular shell 71, an oil-encountering expansion block 72, a flexible waterproof membrane 73 and a plurality of spikes 74, the oil-encountering expansion block 72 is connected to one end of the inner side of the hollow annular shell 71 close to the valve core 2, the flexible waterproof membrane 73 is fixedly connected to the middle of the hollow annular shell 71, the spikes 74 are uniformly connected to one end of the oil-encountering expansion block 72 close to the flexible waterproof membrane 73, in the event of an accidental rupture of the outer seal 33, which would result in oil leakage, is absorbed in the region of the oil seal ring 7, and triggers the expansion action of the oil-encountering expansion mass 72, and then the spine 74 is pushed to pierce the flexible waterproof membrane 73, so that the materials in the hollow annular shell 71 are mixed, on one hand, the plugging effect is formed by the expansion of the expansion block 72 when meeting oil, on the other hand, the cooling action is triggered to solidify the oil to reduce the fluidity, and an oil film is formed for sealing.

The hollow annular shell 71 is made of a hard material, a notch is reserved at one end close to the valve core 2, the oil swelling block 72 is made of an oil absorption swelling material, the valve core 2 cannot interfere with the oil swelling block 72 even being extruded to the hollow annular shell 71 in a normal state, and the oil is absorbed by the oil swelling block 72 through the notch only when oil leaks, so that the oil is made to swell, and the flexible waterproof membrane 73 is triggered to puncture when plugging.

The space that flexible waterproof membrane 73 kept away from and met oil inflation piece 72 one side and cavity ring shell 71 and form is filled with water, the space that flexible waterproof membrane 73 is close to and meets oil inflation piece 72 one side and cavity ring shell 71 and form is filled with the saltpeter, water and saltpeter mix after flexible waterproof membrane 73 is punctured, the saltpeter can absorb a large amount of heats formation when dissolving in water and cool down, oil solidifies mobility reduction gradually after cooling, thereby supplementary sealed, the difficult condition that fluid medium leaked that appears.

Compared with embodiment 2, in this embodiment, the oil leakage detection function is newly added and the temporary sealing is performed by the oil leakage action, and it is noted that a temperature sensor may be installed in the fixing base 31 to perform monitoring by using a significant temperature drop, so as to know the oil leakage.

The invention can utilize the fluid pressure to act on the valve core 2 by arranging the hollow push column 5 in the valve core 2, and push the hollow push column back to realize high-strength sealing with the composite rubber ring 3 at the outlet, and simultaneously monitor the flow through the flow sensor, thereby calculating the pressure applied to the hollow push column 5, when the fluid pressure is insufficient, the electromagnet in the composite rubber ring 3 is started to actively adsorb the hollow push column 5, thereby still keeping good sealing effect by matching with the fluid pressure.

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 an intelligence ball valve based on fluid pressure, includes valve body (1), movable mounting has case (2) in valve body (1), the exit of valve body (1) is installed and is enclosed (3) with case (2) assorted compound rubber, its characterized in that: a control box (4) is fixedly arranged at the outer end of the valve body (1), a flow sensor is arranged in the valve body (1), the inner end of the valve core (2) is fixedly connected with a hollow push column (5), the hollow push column (5) comprises a hollow cylinder (51), a magnetic pressure ball (52) and a pressure sensor (53), the section of the inlet end of the hollow cylinder (51) close to the valve body (1) is streamline, the inlet end of the hollow cylinder (51) close to the valve body (1) is provided with a pressure groove matched with the magnetic pressure ball (52), the magnetic pressure ball (52) is movably embedded in the pressure groove, the pressure sensor (53) is arranged between the magnetic pressure ball (52) and the pressure groove, an electromagnet is installed in the compound rubber ring (3), and the flow sensor, the pressure sensor (53) and the electromagnet are all connected with the control box (4).

2. A fluid pressure based smart ball valve as defined in claim 1, wherein: the hollow cylinder (51) and the valve core (2) are integrally formed, and the magnetic pressure ball (52) is made of a ferromagnetic material.

3. A fluid pressure based smart ball valve as defined in claim 1, wherein: the composite rubber ring (3) comprises a fixed base (31), an inner sealing layer (32) and an outer sealing layer (33) which are sequentially connected, and the outer sealing layer (33) is positioned on one side close to the valve core (2).

4. A fluid pressure based smart ball valve as defined in claim 3 wherein: reserve between interior sealing layer (32) and the outer sealing layer (33) and be equipped with the stock solution chamber, fixedly connected with a plurality of evenly distributed's pressure bloated ball (6) between interior sealing layer (32) and the outer sealing layer (33), the stock solution intracavity is filled with oil.

5. A fluid pressure based smart ball valve as defined in claim 3 wherein: the fixed base (31) is made of hard materials, and the inner sealing layer (32) and the outer sealing layer (33) are both made of elastic sealing materials.

6. A fluid pressure based smart ball valve as defined in claim 4 wherein: the pressure expansion ball (6) comprises a pair of positioning hemispheres (61), a middle pressure sleeve (62) and a plurality of elastic wires (63), the positioning hemispheres (61) are symmetrically connected to two ends of the elastic wires (63) and are respectively fixedly connected with an outer sealing layer (33) and an inner sealing layer (32), the elastic wires (63) are uniformly embedded in the middle pressure sleeve (62), oil is filled in a space enclosed by the positioning hemispheres (61) and the middle pressure sleeve (62), and oil leakage holes are formed in the middle pressure sleeve (62).

7. A fluid pressure based smart ball valve as defined in claim 6 wherein: the positioning hemisphere (61) is made of a hard material, and the medium-pressure sleeve (62) and the elastic wire (63) are both made of an elastic material.

8. A fluid pressure based smart ball valve as defined in claim 4 wherein: outer sealing layer (33) outward flange department fixedly connected with oil seal ring (7), oil seal ring (7) including cavity ring shell (71), meet oil inflation piece (72), flexible waterproof membrane (73) and a plurality of spine (74), meet oil inflation piece (72) and connect in the one end that cavity ring shell (71) inboard is close to case (2), flexible waterproof membrane (73) fixed connection is in cavity ring shell (71) middle part, spine (74) evenly connect in the one end that meets oil inflation piece (72) and be close to flexible waterproof membrane (73).

9. A fluid pressure based smart ball valve as defined in claim 8 wherein: the hollow annular shell (71) is made of a hard material, a notch is reserved at one end close to the valve core (2), and the oil-encountering expansion block (72) is made of an oil-absorbing expansion material.

10. A fluid pressure based smart ball valve as defined in claim 8 wherein: the space formed by one side, far away from the oil-encountering expansion block (72), of the flexible waterproof membrane (73) and the hollow annular shell (71) is filled with water, and the space formed by one side, near the oil-encountering expansion block (72), of the flexible waterproof membrane (73) and the hollow annular shell (71) is filled with saltpeter.