Ball valve body and ball valve

Abstract

A ball valve body and a ball valve. The ball valve body comprises a first valve body structure (10) and a second valve body structure (20), wherein the first valve body structure (10) comprises a first connecting portion (100A) and a first main body portion (200A), the first main body portion (200A) being connected to one end of the first connecting portion (100A); the second valve body structure (20) is connected to the side of the first main body portion (200A) away from the first connecting portion (100A), and defines an accommodating space, in which a ball-valve movable door is placed; and the wall thickness of the first main body portion (200A) gradually decreases in a direction away from the first connecting portion (100A).

Description

Ball valve body and ball valve

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 6, 2023, with application number 202311148431.8, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of pumped storage power station equipment, and in particular to a ball valve body and a ball valve. Background Art

[0003] The pumped storage power station is equipped with a reversible pumping-generating unit. When the power grid is in peak demand, the water in the upper reservoir is released to the lower reservoir, and the water potential energy is converted into electricity and transmitted to the grid. When the power grid is in low demand, the water in the lower reservoir is pumped to the upper reservoir, and the electricity is stored in the form of potential energy, which absorbs the excess electricity in the grid and plays a role of "peak shaving and valley filling".

[0004] Among them, the pump turbine of the pumped storage power station frequently switches between the turbine working state and the pump working state. Valves are needed to flexibly control the water inlet between the working state switches of the pump turbine. The existing water inlet valves of the pump turbine are mainly ball valves.

[0005] At present, the valve body of the ball valve is spherical. In order to ensure the rigidity of the valve body, the valve body is thick, which makes the manufacturing of the ball valve difficult and costly. At the same time, due to the thick thickness of the valve body, the overall weight of the valve body is large, and it is not easy to carry and install. SUMMARY OF THE INVENTION

[0006] The present application provides a ball valve body and a ball valve to solve the above technical problems.

[0007] The present application provides a ball valve body, comprising: a first valve body structure, the first valve body structure comprising a first connecting portion and a first main body portion, the first main body portion being connected to one end of the first connecting portion; a second valve body structure, connected to a side of the first main body portion away from the first connecting portion and defining an accommodating space for placing a ball valve; the wall thickness of the first main body portion gradually decreases along the direction away from the first connecting portion.

[0008] The present application also provides a ball valve, comprising the above-mentioned ball valve body and a valve, wherein the valve is arranged in the accommodating space. Beneficial effects

[0009] The beneficial effects of this application are:

[0010] The present application provides a ball valve body and a ball valve. By gradually reducing the wall thickness of the first main body of the ball valve body in a direction away from the first connection portion, that is, the wall thickness of the first main body is thinner at a position away from the first connection portion than the wall thickness of the existing ball valve body, thereby reducing the manufacturing volume and material quantity of the first main body of the ball valve body. In other words, by reducing the wall thickness of a portion of the ball valve body, the material quantity and manufacturing volume of the ball valve body are reduced, which reduces the weight of the ball valve body and also reduces the manufacturing cost of the ball valve. Since the wall thickness of the first main body gradually decreases in a direction away from the first connection portion, the rigidity of the first connection portion and the portion of the first main body near the first connection portion in the area of ​​the first main body near the first connection portion is not affected, and can meet the use requirements of the ball valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a schematic structural diagram of a ball valve body in an embodiment of the present invention (front view);

[0012] FIG2 is a schematic diagram of the cross-sectional structure of a ball valve body in an embodiment of the present invention;

[0013] FIG3 is a schematic cross-sectional view of a valve body structure in an embodiment of the present invention;

[0014] FIG4 is a schematic structural diagram of a ball valve body in an embodiment of the present invention (left side view).

[0015] Description of reference numerals:

[0016] 10. First valve body structure; 100A, first connecting portion; 101A, first through hole; 200A, first main body; 201A, first upper main body; 202A, first lower main body; 301A, upper inner wall; 302A, upper outer wall; 401A, lower inner wall; 402A, lower outer wall.

[0017] 20. Second valve body structure; 100B. Second connecting portion; 101B. Second through hole; 200B. Second main body portion.

[0018] 201B, second upper main body; 202B, second lower main body.

[0019] 501, first bracket; 502, second bracket; 601, first hole slot; 602, second hole slot. Modes for Carrying Out the Invention

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] As shown in Figures 1-4, embodiments of the present invention provide a ball valve body comprising a first valve body structure 10 and a second valve body structure 20. The first valve body structure 10 comprises a first connecting portion 100A and a first main body 200A, with the first main body 200A connected to one end of the first connecting portion 100A. The second valve body structure 20 is connected to the side of the first main body 200A facing away from the first connecting portion 100A and defines a space for accommodating the ball valve. The wall thickness of the first main body 200A gradually decreases as it moves away from the first connecting portion 100A.

[0024] It should be noted that the "wall thickness" described in the present invention refers to the length of a ray emitted from the valve body structure (ball valve body) with the center point of the ball valve as the starting point and passing through the first valve body structure 10 or the second valve body structure 20, when the ray is located in the first valve body structure 10 or the second valve body structure 20.

[0025] The first valve body structure 10 is generally an integrated structure, that is, the first main body portion 200A and the first connecting portion 100A are an integrated structure and can be formed by casting.

[0026] It is understood that as the wall thickness of the first main body portion 200A decreases in a direction away from the first connecting portion 100A, that is, the wall thickness of the first main body portion 200A decreases as it moves farther from the first connecting portion 100A, the smaller the wall thickness is, the less material and manufacturing effort is required relative to locations where the wall thickness is thicker.

[0027] It should be noted that while the wall thickness of the first main body 200A gradually decreases away from the first connecting portion 100A, due to the actual length limitation of the first upper main body 200A, the wall thickness of the first main body 200A cannot be reduced indefinitely. Based on the actual practical conditions of the ball valve, the first main body 200A has a minimum wall thickness. For example, the minimum wall thickness of the first main body 200A is at the interface between the first main body 200A and the second valve body structure 20.

[0028] Secondly, according to the actual practical situation of the ball valve, the main stress-bearing areas of the first valve body are the first connecting part 100A and the first main body part 200A close to the first connecting part 100A. Therefore, the wall thickness of the first main body part 200A gradually decreases in the direction away from the first connecting part 100A and does not affect the rigidity of the ball valve body.

[0029] Based on the above description, those skilled in the art will understand that the ball valve body and ball valve proposed in the present invention achieve a reduction in the manufacturing and material requirements of the first body portion 200A of the ball valve body by gradually reducing the wall thickness of the first body portion 200A away from the first connecting portion 100A. That is, the wall thickness of the first body portion 200A is thinner at locations farther from the first connecting portion 100A than that of conventional ball valve bodies. This reduces the material and manufacturing requirements of the first body portion 200A of the ball valve body by reducing the wall thickness of certain areas of the ball valve body, thereby reducing the weight of the ball valve body and the manufacturing cost of the ball valve. Because the wall thickness of the first body portion 200A gradually decreases away from the first connecting portion 100A, the rigidity of the first connecting portion 100A and the area of ​​the first body portion 200A near the first connecting portion 100A is not affected, thus meeting the operational requirements of the ball valve body.

[0030] In some embodiments, the second valve body structure 20 includes a second main body portion 200B and a second connecting portion 100B. The second main body portion 200B is connected to one end of the second connecting portion 100B. The side of the second main body portion 200B facing away from the second connecting portion 100B abuts against the first main body portion 200A to define the aforementioned accommodation space. The wall thickness of the second main body portion 200B gradually decreases in a direction away from the second connecting portion 100B.

[0031] In conjunction with the above description, it can be understood that by setting the wall thickness of the second main body portion 200B to be the same as the wall thickness of the first main body portion 200A, the manufacturing volume and material quantity of the second valve body structure 20 are controlled, thereby reducing the manufacturing cost of the entire ball valve body. Similarly, because the wall thickness of the second main body portion 200B gradually decreases along the direction of the second main body portion 200B away from the second connecting portion 100B, the rigidity of the second connecting portion 100B and the area of ​​the second main body portion 200B near the second connecting portion 100B are not affected. Since the primary force-bearing areas of the first valve body structure 10 are the first connecting portion 100A and the first main body portion 200A near the first connecting portion 100A, the gradual decrease in the wall thickness of the first main body portion 200A away from the first connecting portion 100A does not affect the rigidity of the ball valve body, and can meet the use requirements of the ball valve body.

[0032] It can be understood that the above-mentioned thinning treatment of the wall thickness of the first main body 200A and the second main body 200B at the same time can make the ball valve body formed by connecting the first valve body structure 10 and the second valve body structure 20 lighter, easier to carry and maintain, and can also reduce the manufacturing volume and material amount of the ball valve body.

[0033] It should be noted that the “manufacturing volume” described in this application document includes but is not limited to the manpower, time and related expenses required to manufacture a certain item.

[0034] In some embodiments, the first main body 200A and the second main body 200B are generally hemispherical or hemispherical-like structures, so that both can have concave structures. The concave structure of one is docked with the concave structure of the other to form a spherical accommodating space for accommodating the ball valve.

[0035] In some embodiments, the first connection part 100A and the second connection part 100B are generally cylindrical or rectangular, and are provided with a through hole penetrating the connection part along the axial direction. The through hole is connected to the accommodating space to connect the external environment with the accommodating space.

[0036] In some embodiments, the first valve body structure 10 and the second valve body structure 20 are mirror-symmetrical. That is, the first valve body structure 10 and the second valve body structure 20 are exactly the same in size and shape.

[0037] It can be understood that the ball valve body is formed by docking two completely identical valve body structures, that is, a single valve body structure can be produced to form the ball valve body, thereby reducing the mold opening of non-axisymmetric structures during manufacturing and production, thereby reducing production costs.

[0038] In other embodiments, the first valve body structure 10 and the second valve body structure 20 may also have differences, for example, the length of the first connection portion 100A is longer than the length of the second connection portion 100B, the width of the first connection portion 100A is greater than the width of the second connection portion 100B, etc.

[0039] In some embodiments, the first valve body structure 10 and the second valve body structure 20 are mirror-symmetrical, the interface between the first valve body structure 10 and the second valve body structure 20 is a first plane, and the central axis of the first connecting portion 100A is perpendicular to the first plane.

[0040] In a related embodiment, the first body portion 200A includes a first upper body portion 201A and a first lower body portion 202A. The first upper body portion 201A and the first lower body portion 202A are respectively located on either side of the central axis of the first connecting portion 100A. The first upper body portion 201A has an upper inner wall surface 301A and an upper outer wall surface 302A. Both the upper inner wall surface 301A and the upper outer wall surface 302A are spherical surfaces. The center of the upper inner wall surface 301A is located at the intersection of the central axis of the first connecting portion 100A and the first plane.

[0041] The center of the upper outer wall surface 302A is located on the side of the central axis of the first connecting portion 100A close to the first lower main body portion 202A, and the center of the upper outer wall surface 302A is also located between the first connecting portion 100A and the first plane.

[0042] In another embodiment related thereto, the center of the upper outer wall 302A is located on the first plane, and the center of the upper outer wall 302A is also located on the side of the central axis of the first connecting portion 100A close to the first lower body portion 202A.

[0043] It should be noted that the distance between the upper inner wall surface 301A and the upper outer wall surface 302A of the ray emitted from the center point of the ball valve is the wall thickness.

[0044] At the same time, it can be understood that the first valve body structure 10 and the second valve body structure 20 are mirror-symmetrical, and the central axis of the first connecting part 100A is perpendicular to the first plane. Since the first valve body structure 10 is hemispherical, the central axis of the first connecting part 100A passes through the center of the first valve body structure 10 at this time.

[0045] In another related embodiment, the first lower body portion 202A has a lower inner wall surface 401A and a lower outer wall surface 402A, both of which are spherical. The center of the lower inner wall surface 401A is located at the intersection of the central axis of the first connecting portion 100A and the first plane. The center of the lower outer wall surface 402A is located on the side of the central axis of the first connecting portion 100A closer to the first upper body portion 201A, and the center of the lower outer wall surface 402A is also located between the first connecting portion 100A and the first plane.

[0046] In another related embodiment, the center of the lower inner wall surface 401A is located at the intersection of the central axis of the first connecting part 100A and the first plane, the center of the lower outer wall surface 402A is located on the first plane, and the center of the lower outer wall surface 402A is also located on the side of the central axis of the first connecting part 100A close to the first upper main body part 201A.

[0047] Furthermore, in some specific embodiments, the distance between the center of the upper inner wall surface 301A and the center of the upper outer wall surface 302A projected on the central axis of the first connecting portion 100A is a first distance, and the distance between the center of the upper inner wall surface 301A and the center of the upper outer wall surface 302A and their projections on the first plane is a second distance, and the first distance is equal to the second distance.

[0048] In some specific embodiments, the radius of the sphere formed by the upper inner wall surface 301A is 1710 mm, the radius of the sphere formed by the upper outer wall surface 302A is 1875 mm, the first spacing is 23.75 mm, and the second spacing is 23.75 mm.

[0049] It should be noted that, in some of the above-mentioned embodiments or implementations, by eccentrically setting the outer surface of the first valve body structure 10 (the above-mentioned upper outer wall 302A and lower outer wall 402A) relative to the inner surface (the above-mentioned upper inner wall 301A and lower inner wall 401A), the wall thickness of the portion of the first main body 200A close to the first connecting portion 100A is increased relative to the non-eccentric setting, and the wall thickness of the portion of the first main body 200A away from the first connecting portion 100A is reduced relative to the eccentric setting, thereby relatively increasing the thickness of a small part of the first main body 200A near the first connecting portion 100A and reducing the wall thickness of most areas of the first main body 200A (i.e., the area away from the first connecting portion 100A), that is, reducing the total mass of the valve body structure as a whole. At the same time, since the force-bearing part of the ball valve body is mainly concentrated in the first connecting part 100A and the partial area of ​​the first main part 200A close to the first connecting part 100A, the rigidity of the ball valve body is substantially enhanced by eccentrically setting the outer surface of the first main part 200A.

[0050] When the second valve body structure 20 is mirror-symmetrical to the first valve body structure 10, the second valve body structure 20 is also configured as described in the above embodiment, that is, the spherical outer surface of the second valve body structure 20 is eccentrically configured relative to the spherical inner surface, so that it has the beneficial effects brought by the above-mentioned first valve body structure 10, which will not be described in detail here.

[0051] In some related embodiments, the first upper body portion 201A and the first lower body portion 202A are mirror-symmetrical, and the central axis of the first body portion 200A coincides with the central axis of the first connecting portion 100A. That is, the central axis of the first connecting portion 100A coincides with the central axis of the first valve body structure 10. The central axis of the first valve body structure 10 is perpendicular to the first plane and passes through the center point of the first plane. When the first valve body structure 10 and the second valve body structure 20 are mirror-symmetrical, the center point of the first plane is the center point of the ball valve body.

[0052] It should be noted that the central axis of the first connecting portion 100A coincides with the central axis of the first main body portion 200A. That is, half of the first connecting portion 100A is connected to the first upper main body portion 201A, and the other half is connected to the first lower main body portion 202A. Similarly, the wall thickness of the first upper main body portion 201A decreases away from the first connecting portion 100A, and the wall thickness of the first lower main body portion 202A decreases away from the first connecting portion 100A. That is, the wall thickness of the first upper main body portion 201A and the first lower main body portion 202A is the same at points symmetrical about the central axis of the first connecting portion 100A.

[0053] Since the first upper main body 201A and the first lower main body 202A are symmetrical about the central axis of the first connecting part 100A, the upper inner wall surface 301A and the lower inner wall surface 401A are spherical surfaces with the same radius that are symmetrical about the central axis of the first connecting part 100A, and the upper outer wall surface 302A and the lower outer wall surface 402A are spherical surfaces with the same radius that are symmetrical about the central axis of the first connecting part 100A.

[0054] When the second valve body structure 20 is mirror-symmetrical to the first valve body structure 10 , the second connecting portion 100B and the second main body portion 200B are arranged as described above.

[0055] In some embodiments, the first connecting portion 100A has a first through hole 101A, and the first through hole 101A is connected to the accommodating space;

[0056] The second connecting portion 100B defines a second through hole 101B, and the second through hole 101B is communicated with the accommodating space.

[0057] Generally, the first connection portion 100A is connected to an external connection pipe, and the medium in the external connection pipe is introduced into the accommodating space through the first through hole 101A. The second connection portion 100B is connected to another external connection pipe, and the medium in the accommodating space is guided out to the external connection pipe through the second through hole 101B.

[0058] In some embodiments, when the first valve body structure 10 and the second valve body structure 20 are mirror-symmetrical, the first through hole 101A and the second through hole 101B are also mirror-symmetrical.

[0059] In some embodiments, a first bracket 501 is provided on the ground-side wall of the first body portion 200A, and a second bracket 502 is provided on the ground-side wall of the second body portion 200B. The first bracket 501 and the second bracket 502 are used to provide support when the ball valve body is installed.

[0060] When the first valve body structure 10 and the second valve body structure 20 are mirror-symmetrical, the first bracket 501 and the second bracket 502 have the same structure and size.

[0061] In some embodiments, two first holes 601 are provided on both sides of the first main body 200A, and two second holes 602 are provided on both sides of the second main body 200B. When the first main body 200A and the second main body 200B are docked, a first hole 601 and a second hole 602 are docked to form a third through hole, which is used to allow the shaft of the valve to extend out of the accommodating space through the third through hole.

[0062] Other embodiments of the present invention further provide a ball valve comprising the aforementioned ball valve body and a valve disposed within a housing within the ball valve body. Because this ball valve utilizes the technical solutions of some or all of the aforementioned ball valve body embodiments, it exhibits at least some or all of the beneficial effects of the aforementioned ball valve body, and therefore will not be further detailed here.

[0063] It should be noted that the valve is generally a spherical structure that matches the spherical storage space formed in the ball valve body. A channel runs through the spherical structure, with one end of the channel matching the size of first through-hole 101A, and the other end matching the size of second through-hole 101B. When the ball valve is in the on state, the ends of the channel on the valve are aligned with the first through-hole 101A and the second through-hole 101B on the ball valve body, respectively, allowing the first through-hole 101A and the second through-hole 101B to connect to the external connecting pipe. When the ball valve is in the off state, the valve is rotated so that the non-channel area (solid spherical surface) of the valve blocks the first through-hole 101A and the second through-hole 101B of the column, thereby controlling the ball valve to shut off.

[0064] In some embodiments, two first holes 601 are provided on both sides of the first main body 200A, and two second holes 602 are provided on both sides of the second main body 200B. When the first main body 200A is docked with the second main body 200B, a first hole 601 is docked with a second hole 602 to form a third through hole, that is, the ball valve body has two third through holes for allowing the shaft of the valve to extend out of the accommodating space through the third through holes, and the end of the valve shaft facing away from the valve axis extends out of the ball valve body and is connected to the valve rotating arm.

[0065] It should be noted that the valve can be driven to rotate by the valve arm, thereby switching the on and off states of the ball valve.

Claims

1. A ball valve body, comprising: a first valve body structure, the first valve body structure comprising a first connecting portion and a first main body portion, the first main body portion being connected to one end of the first connecting portion; a second valve body structure connected to a side of the first main body away from the first connecting portion and defining an accommodating space for accommodating a valve of the ball valve; The wall thickness of the first main body portion gradually decreases along a direction away from the first connecting portion.

2. The ball valve body according to claim 1, wherein: The second valve body structure comprises a second main body portion and a second connecting portion, the second main body portion is connected to one end of the second connecting portion, and a side of the second main body portion facing away from the second connecting portion is butted against the first main body portion and defines the accommodating space; The wall thickness of the second main body portion gradually decreases along a direction away from the second connecting portion.

3. The ball valve body according to claim 2, wherein: The first valve body structure is mirror-symmetrical to the second valve body structure.

4. The ball valve body according to claim 3, wherein: The butting surface between the first valve body structure and the second valve body structure is a first plane, and the central axis of the first connecting portion is perpendicular to the first plane.

5. The ball valve body according to claim 4, wherein: The first main body portion includes a first upper main body portion and a first lower main body portion, and the first upper main body portion and the first lower main body portion are respectively located on both sides of the central axis of the first connecting portion; The first upper main body has an upper inner wall surface and an upper outer wall surface, and both the upper inner wall surface and the upper outer wall surface are spherical surfaces; The center of the sphere of the upper inner wall surface is located at the intersection of the central axis of the first connecting portion and the first plane; The center of the sphere of the upper outer wall is located on a side of the central axis of the first connecting portion close to the first lower main body portion, and the center of the sphere of the upper outer wall is also located between the first connecting portion and the first plane; or The center of the sphere of the upper outer wall surface is located on the first plane, and the center of the sphere of the upper outer wall surface is also located on a side of the central axis of the first connecting portion close to the first lower main body portion.

6. The ball valve body according to claim 5, wherein: The first lower main body has a lower inner wall surface and a lower outer wall surface, and both the lower inner wall surface and the lower outer wall surface are spherical surfaces; The center of the lower inner wall surface is located at the intersection of the central axis of the first connecting portion and the first plane; the center of the lower outer wall surface is located on the side of the central axis of the first connecting portion close to the first upper main body portion, and the center of the lower outer wall surface is also located between the first connecting portion and the first plane; or The center of the sphere of the lower outer wall surface is located on the first plane, and the center of the sphere of the lower outer wall surface is also located on a side of the central axis of the first connecting portion close to the first upper main body portion.

7. The ball valve body according to claim 6, wherein: The first upper main body portion is mirror-symmetrical to the first lower main body portion, and a central axis of the first main body portion coincides with a central axis of the first connecting portion.

8. The ball valve body according to claim 2, characterized in that: The first connecting portion has a first through hole, and the first through hole is connected to the accommodating space; The second connecting portion has a second through hole, and the second through hole is communicated with the accommodating space.

9. The ball valve body according to claim 2, wherein: A first bracket is disposed on the side wall of the first main body near the ground, and a second bracket is disposed on the side wall of the second main body near the ground.

10. A ball valve, comprising: The ball valve body according to any one of claims 1 to 9; A valve is arranged in the accommodating space.

Images