CN112049956A

CN112049956A - Angle type duplex ball valve for nuclear submarine and use method thereof

Info

Publication number: CN112049956A
Application number: CN202010914760.9A
Authority: CN
Inventors: 钱玉峰; 陈继江; 沈圣华
Original assignee: Jiangsu Evalve Co ltd
Current assignee: Jiangsu Evalve Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2020-12-08

Abstract

The invention relates to the technical field of valves, in particular to an angle type duplex ball valve for a nuclear submarine and a using method thereof. The invention uses a top-mounted structure, adopts two pure mechanical valve balls for control, has safe and reliable opening and closing performance and more compact valve size.

Description

Angle type duplex ball valve for nuclear submarine and use method thereof

Technical Field

The invention relates to an angle type duplex ball valve and a using method thereof, in particular to an angle type duplex ball valve for a nuclear submarine and a using method thereof, and belongs to the technical field of valves.

Background

The nuclear submarine is a type of submarine, and refers to a submarine designed by taking a nuclear reactor as a power source. Because the production and operation cost of the submarine and the volume and weight of related equipment are added, only the military submarine adopts the power source, the underwater endurance of the nuclear submarine can reach 20 thousands of seas, and the self-sustaining capability can reach 60-90 days; the ball valve is that the opening and closing piece is driven by the valve rod, and the valve of rotary motion is made around the ball valve axis, also can be used to fluidic regulation and control, wherein have very strong shearing force between its ball core of hard seal ball valve and the metal disk seat of build-up welding carbide, the medium that is particularly useful for containing small solid particle etc. and the pair ball valve not only can nimble control medium on the pipeline cut off, have double insurance simultaneously, just as a valve ball seals inefficacy, another valve ball can also continue the circulation that cuts off the medium, this kind of valve generally should horizontal installation in the pipeline, the ball valve divide into according to the drive mode: hydraulic ball valve, electric ball valve, manual ball valve.

The existing ball valve structure for the nuclear submarine is large in size and large in occupied space, advanced electrical appliance control technology is mostly adopted, failure risk in a severe submarine environment can cause failure of device control, and serious disaster accidents are caused.

Disclosure of Invention

The invention aims to provide an angle type duplex ball valve for a nuclear submarine and a using method thereof.

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

an angle type duplex ball valve for a nuclear submarine comprises a valve body, wherein a pipeline is fixedly arranged inside the valve body, the pipeline is a right-angle bent pipeline, two ends of the pipeline are respectively communicated with two adjacent surfaces of the valve body, a first ball body and a second ball body are connected onto the pipeline, a sealing ring is arranged at the joint of the first ball body and the pipeline, a first valve cover and a second valve cover are respectively arranged at the positions, corresponding to the first ball body and the second ball body, of the upper end of the valve body, a first bearing penetrating through the first valve cover is fixedly arranged at the upper end of the first ball body, a hydraulic oil cylinder is arranged at the upper end of the first bearing, the hydraulic oil cylinder is fixedly connected with the first valve cover through screws, a second bearing penetrating through the second valve cover is fixedly arranged at the upper end of the second ball body, a worm gear reducer is fixedly arranged at the upper end of the second bearing, the worm gear reduction box is fixedly connected with the second valve cover through the screws, a worm is arranged on the worm gear reduction box, and a rotating wheel is fixedly arranged at the outer end of the worm.

Preferably, the bottom ends of the first sphere and the second sphere are both fixedly provided with a valve seat, the rear side of the valve seat is fixedly provided with a spring seat, and the spring seat is provided with symmetrically distributed wave springs.

Preferably, the second valve cover and the first valve cover are connected with the valve body through studs, and nuts are connected to the upper ends of the studs in a threaded mode.

Preferably, the joint of the second valve cover and the first valve cover and the valve body is provided with a winding pad, the joint of the second valve cover and the second sphere is provided with a thrust pad, and the joint of the first valve cover and the first sphere is also provided with a thrust pad.

Preferably, a filler is arranged at the joint of the upper ends of the second bearing and the second valve cover, a filler is also arranged at the joint of the upper ends of the first bearing and the first valve cover, a seasoning gland is fixedly arranged at the upper end of the filler, and the filler is graphite filler.

Preferably, the first ball body, the second ball body and the outer side surface of the valve seat are all coated with chromium carbide hard alloy in a supersonic spraying mode.

Preferably, the sealing ring is a special graphite sealing ring.

Preferably, the valve body is a stainless steel integral forging valve body.

A use method of an angle type duplex ball valve for a nuclear submarine comprises the following steps:

step 1: when the ball valve is used, the two ends of the pipeline are respectively connected with the pipeline to be communicated in a sealing mode through the connecting piece, and after the connection is completed, whether the connection between the ball valve and the pipeline is correct or not and whether the ball valve is damaged or not are checked;

step 2: then the rotating wheel is rotated anticlockwise, the rotating wheel rotates to drive the worm to rotate, then the worm gear reduction box is driven to rotate along with the worm, the output end of the worm gear reduction box drives the second ball to rotate 90 degrees, and the pipeline at the joint of the second ball and the pipeline is communicated;

and step 3: then the hydraulic oil cylinder is started, the hydraulic oil cylinder drives the first ball body to rotate 90 degrees, so that the pipeline is completely communicated with the pipeline, and the medium is normally conveyed;

and 4, step 4: when the valve needs to be closed, the rotating wheel is rotated clockwise to rotate the second ball body by 90 degrees to seal the pipeline or the hydraulic oil cylinder is started to drive the first ball body to rotate by 90 degrees to seal the pipeline, and the first ball body and the second ball body only need to be closed by one.

Preferably, when one of the first ball body and the second ball body fails due to sealing, the other ball body can be started to be used continuously.

The invention has at least the following beneficial effects:

1. the device is controlled by pure machinery, advanced electrical appliance control technology is avoided, failure risk existing in a severe seabed environment can cause failure of device control, two valve balls are arranged in parallel, when one valve ball fails due to sealing, the second valve ball can be started immediately, the whole device is guaranteed to continue to work effectively, and disaster accidents are avoided.

2. Adopt the quarter bend formula structure, in order to let the valve possess 90 and turn to the function, the space size of the minimize device and the quantity of accessory let a part act as a plurality of functions, can reduce the part of a turn, reduced the connection quantity of flange, also reduced the leakage point simultaneously.

3. The top-mounted type is adopted, the damaged sealing surface can be maintained on line without detaching the valve from the pipeline for maintenance, after the internal part is taken out, the blind plate can be temporarily sealed, and the valve can be used as the pipeline to continue circulating media.

4. The back of the valve seat is provided with a pair of wave springs to prevent the material from expanding at high temperature to block the valve seat and the valve ball, and the size of the expansion is automatically adjusted and eliminated, so that the control valve can normally operate in opening and closing actions.

5. The outer side surfaces of the first ball body, the second ball body and the valve seat are coated with chromium carbide hard alloy in supersonic speed, the HRC can reach more than 80, the bonding force with a substrate can reach more than 100MPa, the bonding force is firm, the valve seat is not easy to fall off, and the sealing service life can exceed more than 10 ten thousand times without leakage.

6. The valve body is a stainless steel integral forging valve body, the material structure is compact, no casting defect exists, and the reliability of sealing of the main body material is ensured.

7. The sealing ring is a special graphite sealing ring, the use temperature can reach more than 600 ℃, and the sealing is reliable and has no leakage.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a top cross-sectional view of the present invention;

FIG. 3 is a partial cross-sectional view of the present invention;

FIG. 4 is a side cross-sectional view of the present invention;

fig. 5 is a top view of the present invention.

In the figure, 1-valve body, 2-first ball, 3-second ball, 4-valve seat, 5-sealing ring, 6-spring seat, 7-wave spring, 8-second valve cover, 9-first valve cover, 10-winding pad, 11-first bearing, 12-stud, 13-nut, 14-thrust pad, 15-hydraulic oil cylinder, 16-second bearing, 17-packing, 18-seasoning gland, 19-worm gear reduction box, 20-screw, 21-worm, 22-runner and 23-pipeline.

Detailed Description

Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.

As shown in fig. 1 to 5, the angle type duplex ball valve for the nuclear submarine provided by the embodiment includes a valve body 1, a pipeline 23 is fixedly arranged inside the valve body 1, the pipeline 23 is a right-angle bent pipeline, two ends of the pipeline 23 are respectively communicated with two adjacent surfaces of the valve body 1, a right-angle bent structure is adopted, in order to enable the valve to have a 90-degree steering function, the space size and the number of accessories of the device are reduced as much as possible, one part serves as multiple functions, one bent part can be reduced, the number of connected flanges is reduced, and meanwhile, leakage points are also reduced;

the pipeline 23 is connected with a first ball body 2 and a second ball body 3, the joints of the first ball body 2 and the second ball body 3 and the pipeline 23 are provided with sealing rings 5, the positions of the upper end of the valve body 1 corresponding to the first ball body 2 and the second ball body 3 are respectively provided with a first valve cover 9 and a second valve cover 8, the second valve cover 8 and the first valve cover 9 are connected with the valve body 1 through a stud 12, the upper end of the stud 12 is in threaded connection with a nut 13, the top-mounted type valve can realize online maintenance of damaged sealing surfaces without detaching the valve from the pipeline for maintenance, after the internal part is taken out, a blind plate can be temporarily sealed, the valve is used as a pipeline, and a medium can continuously circulate;

the upper end of the first ball body 2 is fixedly provided with a first bearing 11 penetrating through a first valve cover 9, the upper end of the first bearing 11 is provided with a hydraulic oil cylinder 15, the hydraulic oil cylinder 15 is fixedly connected with the first valve cover 9 through a screw 20, the upper end of the second ball body 3 is fixedly provided with a second bearing 16 penetrating through a second valve cover 8, a fixed shaft ball body is adopted, the opening and closing torque of the device can be small, the control system structure is small and exquisite, the occupied space is small, the upper end of the second bearing 16 is fixedly provided with a worm gear reduction box 19, the worm gear reduction box 19 is fixedly connected with the second valve cover 8 through a screw 20, the worm gear reduction box 19 is provided with a worm 21, the outer end of the worm 21 is fixedly provided with a rotating wheel 22, the device is controlled by pure machinery, the advanced electrical control technology is avoided, the failure risk existing in the severe seabed environment can cause the failure of, the second valve ball can be started immediately, so that the whole device can continue to work effectively, and the occurrence of disaster accidents is avoided.

In this embodiment, as shown in fig. 1, the bottom ends of the first sphere 2 and the second sphere 3 are both fixedly provided with the valve seat 4, the rear side of the valve seat 4 is fixedly provided with the spring seat 6, the spring seat 6 is provided with the symmetrically distributed wave springs 7, so as to prevent the material from expanding and blocking the valve seat and the valve ball at high temperature, and automatically adjust and eliminate the size of expansion, so that the opening and closing operation of the control valve can normally operate.

In the embodiment, as shown in fig. 1, the joints of the second valve cover 8 and the first valve cover 9 and the valve body 1 are provided with winding pads 10, the joint of the second valve cover 8 and the second ball 3 is provided with a thrust pad 14, and the joint of the first valve cover 9 and the first ball 2 is also provided with a thrust pad 14.

In the present embodiment, as shown in fig. 1, a packing 17 is disposed at a joint of upper ends of the second bearing 16 and the second valve cover 8, a packing 17 is also disposed at a joint of upper ends of the first bearing 11 and the first valve cover 9, a seasoning cover 18 is fixedly disposed at an upper end of the packing 17, and the packing 17 is made of graphite material.

In this embodiment, as shown in fig. 1, the first ball 2, the second ball 3 and the outer surface of the valve seat 4 are coated with chromium carbide hard alloy at supersonic speed, the HRC can reach more than 80, the bonding force with the substrate can reach more than 100MPa, the bonding force is firm, the hard alloy is not easy to fall off, and the sealing service life can exceed more than 10 ten thousand times without leakage.

In this embodiment, as shown in fig. 1, the sealing ring 5 is a special graphite sealing ring, the use temperature can reach over 600 ℃, and the sealing is reliable and has no leakage.

In this embodiment, as shown in fig. 1, the valve body 1 is a stainless steel integral forged valve body, and has a compact material structure and no casting defect, thereby ensuring the reliability of the sealing of the main body material.

As shown in fig. 1 to 5, the use method of the angle duplex ball valve for the nuclear submarine provided by the embodiment includes the following steps:

step 1: when the device is used, the two ends of the pipeline 23 are respectively connected with the pipeline to be communicated in a sealing mode through the connecting piece, and after the connection is completed, whether the connection between the ball valve and the pipeline is correct or not and whether the ball valve is damaged or not are checked;

step 2: then the rotating wheel 22 is rotated anticlockwise, the rotating wheel 22 rotates to drive the worm 21 to rotate, then the worm gear reduction box 19 is driven to rotate along with the worm 21, the output end of the worm gear reduction box 19 drives the second ball 3 to rotate for 90 degrees, and the pipeline at the connection position of the second ball 3 and the pipeline 23 is communicated;

and step 3: then the hydraulic oil cylinder 15 is started, the hydraulic oil cylinder 15 drives the first ball 2 to rotate 90 degrees, so that the pipeline 23 is completely communicated with the pipeline, and the medium is normally conveyed;

and 4, step 4: when the valve needs to be closed, the rotating wheel 22 is rotated clockwise to rotate the second ball body 3 by 90 degrees to seal the pipeline 23 or the hydraulic oil cylinder 15 is started to drive the first ball body 2 to rotate by 90 degrees to seal the pipeline 23, only one of the first ball body 2 and the second ball body 3 needs to be closed, when one of the first ball body 2 and the second ball body 3 fails due to sealing, the other valve ball can be started to continue to be used, the valve device is more compact in size, and the opening and closing performance is safe and reliable.

The invention has the following advantages: 1. the device is controlled by pure machinery, advanced electrical appliance control technology is avoided, failure risk existing in a severe seabed environment can cause failure of device control, two valve balls are arranged in parallel, when one valve ball fails due to sealing, the second valve ball can be started immediately, the whole device is guaranteed to continue to work effectively, and disaster accidents are avoided.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to achieve the technical effect basically.

It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or system in which the element is included.

The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An angle type duplex ball valve for a nuclear submarine comprises a valve body (1) and is characterized in that a pipeline (23) is fixedly arranged inside the valve body (1), the pipeline (23) is a right-angle bent pipeline, and two ends of the pipeline (23) are respectively communicated with two adjacent surfaces of the valve body (1);

a first ball body (2) and a second ball body (3) are connected to the pipeline (23), a sealing ring (5) is arranged at the joint of each of the first ball body (2) and the second ball body (3) and the pipeline (23), and a first valve cover (9) and a second valve cover (8) are respectively arranged at the positions, corresponding to the first ball body (2) and the second ball body (3), of the upper end of the valve body (1);

the upper end of the first ball body (2) is fixedly provided with a first bearing (11) penetrating through the first valve cover (9), the upper end of the first bearing (11) is provided with a hydraulic oil cylinder (15), the hydraulic oil cylinder (15) is fixedly connected with the first valve cover (9) through a screw (20), the upper end of the second ball body (3) is fixedly provided with a second bearing (16) penetrating through the second valve cover (8), the upper end of the second bearing (16) is fixedly provided with a worm gear reduction box (19), the worm gear reduction box (19) is fixedly connected with the second valve cover (8) through the screw (20), a worm (21) is arranged on the worm gear reduction box (19), and the outer end of the worm (21) is fixedly provided with a rotating wheel (22).

2. The angle type duplex ball valve for the nuclear submarine according to claim 1, wherein: the ball valve is characterized in that valve seats (4) are fixedly arranged at the bottom ends of the first ball body (2) and the second ball body (3), spring seats (6) are fixedly arranged on the rear sides of the valve seats (4), and wave springs (7) which are symmetrically distributed are mounted on the spring seats (6).

3. The angle type duplex ball valve for the nuclear submarine according to claim 1, wherein: the second valve cover (8) and the first valve cover (9) are connected with the valve body (1) through a stud (12), and the upper end of the stud (12) is in threaded connection with a nut (13).

4. The angle type duplex ball valve for the nuclear submarine according to claim 1, wherein: the second valve cover (8) with first valve cover (9) all with the junction of valve body (1) is provided with winding pad (10), second valve cover (8) with the junction of second spheroid (3) is provided with thrust pad (14), first valve cover (9) with the junction of first spheroid (2) also is provided with thrust pad (14).

5. The angle type duplex ball valve for the nuclear submarine according to claim 1, wherein: the upper end connecting part of the second bearing (16) and the second valve cover (8) is provided with a packing (17), the upper end connecting part of the first bearing (11) and the first valve cover (9) is also provided with the packing (17), the upper end of the packing (17) is fixedly provided with a seasoning gland (18), and the packing (17) is graphite packing.

6. The angle type duplex ball valve for the nuclear submarine according to claim 2, wherein: the outer side surfaces of the first sphere (2), the second sphere (3) and the valve seat (4) are coated with chromium carbide hard alloy in a supersonic spraying mode.

7. The angle type duplex ball valve for the nuclear submarine according to claim 1, wherein: the sealing ring (5) is a special graphite sealing ring.

8. The angle type duplex ball valve for the nuclear submarine according to claim 1, wherein: the valve body (1) is a stainless steel integral forging valve body.

9. A use method of an angle type duplex ball valve for a nuclear submarine is characterized by comprising the following steps: the method comprises the following steps:

step 1: when the pipeline connecting device is used, two ends of the pipeline (23) are respectively connected with the pipeline to be communicated in a sealing mode through the connecting piece, and after the connection is completed, whether the connection between the ball valve and the pipeline is correct or not and whether the ball valve is damaged or not are checked;

step 2: then the rotating wheel (22) is rotated anticlockwise, the rotating wheel (22) rotates to drive the worm (21) to rotate, then the worm gear reduction box (19) is driven to rotate along with the worm (21), the output end of the worm gear reduction box (19) drives the second ball body (3) to rotate 90 degrees, and a pipeline at the joint of the second ball body (3) and the pipeline (23) is communicated;

and step 3: then the hydraulic oil cylinder (15) is started, the hydraulic oil cylinder (15) drives the first ball body (2) to rotate, so that the pipeline (23) is completely communicated with the pipeline, and the medium is normally conveyed;

and 4, step 4: when the valve needs to be closed, the rotating wheel (22) is rotated clockwise to enable the second sphere (3) to rotate for 90 degrees to seal the pipeline (23) or the hydraulic oil cylinder (15) is started to drive the first sphere (2) to rotate for 90 degrees to seal the pipeline (23), and only one of the first sphere (2) and the second sphere (3) needs to be closed.

10. The use method of the angle type duplex ball valve for the nuclear submarine according to claim 9, wherein the angle type duplex ball valve comprises the following steps: when one of the first ball body (2) and the second ball body (3) fails to work due to sealing, the other ball can be started to continue to be used.