Fixed ball valve body casting

Abstract

The utility model belongs to the field of valves, and provides a fixed ball valve body casting which comprises a barrel, a valve rod seat and a sensor seat. Wherein a rotary cavity with two open ends is formed in the cylinder body; the valve rod seats are connected to the two opposite sides of the barrel in the radial direction of the rotary cavity, the valve rod seats are located outside the rotary cavity and form mounting channels communicated with the rotary cavity, the mounting channels are perpendicular to the axial direction of the rotary cavity, and the mounting channels in the valve rod seats on the two sides are coaxially arranged; the sensor seats are connected to the surface of the cylinder and protrude outwards in the radial direction of the rotary cavity, the multiple sensor seats are arranged at intervals, the projections of all the sensor seats in the axial direction of the sensor seats are located within the outline range of the rotary cavity, and the valve rod seat is at least connected to one sensor seat.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of valves, and particularly relates to a fixed ball valve body casting. BACKGROUND

[0002] The fixed ball valve is widely used in the petroleum, chemical, electric power and other industries due to its compact structure, good sealing performance and simple operation. The traditional ball valve body is generally manufactured through a casting process because casting can produce a valve body with complex shape and accurate size. However, due to the poor structural design of the existing ball valve body, the valve body has the defect of low structural strength after casting, so that the valve body is prone to deformation or leakage when bearing high-pressure or high-temperature fluid, which affects the reliability and safety of the ball valve. Therefore, it is necessary to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the application is to provide a fixed ball valve body casting to solve the technical problem of poor structural strength of the ball valve body in the prior art.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the application is to provide a fixed ball valve body casting, comprising:

[0005] A cylinder body forms a rotary cavity with both ends open;

[0006] A valve rod seat is connected to opposite sides of the cylinder body along the radial direction of the rotary cavity, the valve rod seat is located outside the rotary cavity and forms a mounting channel connected to the rotary cavity, the mounting channel is perpendicular to the axial direction of the rotary cavity, and the mounting channels on both sides of the valve rod seat are coaxially arranged;

[0007] A sensor seat is connected to the surface of the cylinder body and protrudes outward along the radial direction of the rotary cavity, a plurality of sensor seats are arranged at intervals, and the projections of all the sensor seats in their axial directions are located within the contour range of the rotary cavity, and the valve rod seat is connected to at least one of the sensor seats.

[0008] Optionally, the sensor seats are uniformly distributed in the axial and circumferential directions of the rotary cavity.

[0009] Optionally, the fixed ball valve body casting further comprises a connecting flange;

[0010] The connecting flange is connected to both ends of the cylinder body along the axial direction of the rotary cavity and is coaxially arranged with the rotary cavity, and the valve rod seat is connected to one of the connecting flanges.

[0011] Optionally, the fixed ball valve body casting further comprises a plurality of nameplate seats connected to the cylinder body;

[0012] All the nameplate seats are protruded from the surface of the cylinder body in the same direction and flush on the side away from the cylinder body.

[0013] Optionally, the nameplate seat and the sensor seat are distributed on both sides of the mounting channel.

[0014] Optionally, the rotary cavity has at least a first cavity, a second cavity, a third cavity and a fourth cavity distributed along the axial direction of the rotary cavity in sequence;

[0015] The shape of the first cavity is adapted to the shape of the ball on the target valve stem, the cross-sectional diameters of the second cavity and the third cavity gradually decrease along the axial direction of the rotary cavity, and the fourth cavity is a cylindrical cavity and the diameter of the fourth cavity is smaller than the minimum diameter of the third cavity.

[0016] Optionally, the cylinder body comprises a first side wall for forming the first cavity and a second side wall for forming the fourth cavity, and further comprises a third side wall capable of forming a smooth transition between the first side wall and the second side wall;

[0017] The third side wall comprises a first arc segment, a second arc segment and a third arc segment connected in sequence, the first arc segment and the third arc segment arch towards the center of the rotary cavity, and the second arc segment arches away from the center of the rotary cavity.

[0018] The fixed ball valve body casting provided by the present application has the beneficial effects that, compared with the prior art, in the fixed ball valve body casting provided by the present application, firstly, the cylinder body forms a rotary cavity with a rotary structure; secondly, the mounting channels formed on the valve stem seats are perpendicular to the axial direction of the rotary cavity and the mounting channels on the valve stem seats on both sides of the cylinder body are coaxially arranged; thirdly, the projections of the sensor seats connected to the surface of the cylinder body along the respective axial directions are all located within the contour range of the rotary cavity and the valve stem seat is connected to at least one sensor seat. Therefore, the fixed ball valve body casting provided by the present application not only can avoid stress concentration in the casting process, but also can provide support for the sensor seat which is part of the valve stem seat, so that the structural strength of the ball valve body can be significantly improved, which is much better than the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 The overall structure of the fixed ball valve body casting in the embodiments of the present application Figure 1;

[0021] Figure 2 The overall structure of the fixed ball valve body casting in the embodiment of the application is shown in the figure Figure 2 ;

[0022] Figure 3 The overall structure of the fixed ball valve body casting in the embodiment of the application is shown in the figure Figure 3 ;

[0023] Figure 4 The overall structure of the fixed ball valve body casting in the embodiment of the application is shown in the figure

[0024] Figure 5 The cross-sectional structure along the A-A line in the figure Figure 4

[0025] In the figure, the reference numerals are: 101, cylinder; 102, rotating cavity; 103, valve rod seat; 104, mounting channel; 105, sensor seat; 106, connecting flange; 107, nameplate seat; 108, first cavity; 109, second cavity; 110, third cavity; 111, fourth cavity; 112, first side wall; 113, second side wall; 114, third side wall; 115, first arc segment; 116, second arc segment; 117, third arc segment. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] ​In addition, the terms "first", "second", "third", etc. are used herein only to describe different instances, and are not used to indicate or imply relative importance or a number of indications of the technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0030] Please refer to Figures 1 to 5 The fixed ball valve body casting provided by the embodiment of the present application will be described. The fixed ball valve body casting includes a barrel 101, a valve rod seat 103, and a sensor seat 105. Among them:

[0031] The barrel 101 forms a rotary cavity 102 with open ends; the valve rod seat 103 is connected to the opposite sides of the barrel 101 along the radial direction of the rotary cavity 102, the valve rod seat 103 is located outside the rotary cavity 102 and forms a mounting channel 104 connected to the rotary cavity 102, the mounting channel 104 is perpendicular to the axial direction of the rotary cavity 102 and the mounting channels 104 on the two sides of the valve rod seat 103 are coaxially arranged; the sensor seat 105 is connected to the surface of the barrel 101 and protrudes outward along the radial direction of the rotary cavity 102, the sensor seats 105 are arranged at intervals and the projections of all the sensor seats 105 in their axial directions are located within the contour range of the rotary cavity 102, and the valve rod seat 103 is connected to at least one sensor seat 105. In the embodiment, the mounting channel 104 formed on the valve rod seat 103 can be used to mount a target valve rod, and the sensor seat 105 can be used to mount a sensor for detecting various indicators in the ball valve, which will not be described here.

[0032] According to the above structure provided in the embodiment, in the fixed ball valve body casting provided in the embodiment, firstly, the barrel 101 forms the rotary cavity 102 with a rotary structure; secondly, the mounting channel 104 formed on the valve rod seat 103 is perpendicular to the axial direction of the rotary cavity 102 and the mounting channels 104 on the two sides of the valve rod seat 103 are coaxially arranged; thirdly, the projections of the sensor seats 105 connected to the surface of the barrel 101 along their respective axial directions are located within the contour range of the rotary cavity 102 and the valve rod seat 103 is connected to at least one sensor seat 105. Therefore, the fixed ball valve body casting provided in the embodiment can not only avoid stress concentration during casting, but also provide support for the sensor seat 105 that is part of the valve rod seat 103, which can significantly improve the structural strength of the ball valve body, which is much better than the prior art.

[0033] In another embodiment of the present application, please refer to Figures 1 to 5The sensor seats 105 are uniformly distributed in the axial and circumferential directions of the rotary cavity 102. According to the above structure provided in the embodiment, the plurality of sensor seats 105 distributed in the axial and circumferential directions of the rotary cavity 102 can further avoid stress concentration of the ball valve body, and is conducive to further improving the structural strength of the ball valve body.

[0034] In another embodiment of the present application, please refer to Figures 1 to 5 The fixed ball valve body casting further comprises a plurality of connection flanges 106; the connection flanges 106 are connected to the two ends of the barrel 101 in the axial direction of the rotary cavity 102 and are coaxially arranged with the rotary cavity 102, and the valve rod seat 103 is connected to one of the connection flanges 106. According to the above structure provided in the embodiment, the valve rod seat 103 connected to the connection flange 106 can be further supported by the connection flange 106, which is conducive to further improving the structural strength of the ball valve body.

[0035] In another embodiment of the present application, please refer to Figures 1 to 5 The fixed ball valve body casting further comprises a plurality of nameplate seats 107 connected to the barrel 101; all the nameplate seats 107 protrude in the same direction from the surface of the barrel 101 and are flush on the side away from the barrel 101. The nameplate seats 107 in the embodiment can be used to mark various working parameters of the ball valve, which will not be described here. According to the above structure provided in the embodiment, the plurality of nameplate seats 107 protruding in the same direction and flush on the side away from the barrel 101 can make the center of gravity of the barrel 101 closer to the central axis of the barrel 101, which is conducive to further improving the structural strength of the ball valve body.

[0036] In another embodiment of the present application, please refer to Figures 1 to 5 The nameplate seats 107 and the sensor seats 105 are distributed on both sides of the mounting channel 104. According to the above structure provided in the embodiment, the nameplate seats 107 and the sensor seats 105 distributed on both sides of the mounting channel 104 can balance the stress on both sides of the barrel 101, which is conducive to further improving the structural strength of the ball valve body.

[0037] In another embodiment of the present application, please refer to Figures 1 to 5, the rotary cavity 102 has at least a first cavity 108, a second cavity 109, a third cavity 110 and a fourth cavity 111 arranged along the axial direction of the rotary cavity 102 in sequence; the first cavity 108 is adapted to the spherical shape of the target valve stem, the second cavity 109 and the third cavity 110 have gradually decreasing cross-sectional diameters along the axial direction of the rotary cavity 102, and the fourth cavity 111 is a cylindrical cavity and has a diameter smaller than the minimum diameter of the third cavity 110. According to the above structure provided in the embodiment, the second cavity 109 and the third cavity 110 with gradually decreasing diameters can be used as transition cavities of the first cavity 108 and the fourth cavity 111 to make the stress of the barrel 101 more uniform, and on the other hand, the side walls of the barrel 101 used to form the second cavity 109 and the third cavity 110 can be combined with the fourth cavity 111 to install the target valve seat, which is beneficial to further improve the structural strength of the ball valve body.

[0038] In another embodiment of the present application, please refer to Figures 1 to 5 The barrel 101 includes a first side wall 112 used to form the first cavity 108 and a second side wall 113 used to form the fourth cavity 111, and further includes a third side wall 114 capable of forming a smooth transition between the first side wall 112 and the second side wall 113; the third side wall 114 includes a first arc segment 115, a second arc segment 116 and a third arc segment 117 connected in sequence, the first arc segment 115 and the third arc segment 117 are arched towards the center of the rotary cavity 102, and the second arc segment 116 is arched away from the center of the rotary cavity 102.

[0039] According to the above structure provided in the embodiment, the arc-shaped third side wall 114 can reduce the stress concentration between the first side wall 112 and the second side wall 113, and on the other hand, since the third side wall 114 is divided into three arc segments connected in sequence and the arched direction of the second arc segment 116 is opposite to that of the first arc segment 115 and the third arc segment 117, the barrel 101 has a greater wall thickness at the second arc segment 116, which is beneficial to further improve the structural strength of the ball valve body.

[0040] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fixed ball valve body casting characterized by, The fixed ball valve body casting comprises: a cylinder (101) forming a rotary cavity (102) with both ends open; a valve stem seat (103) connected to opposite sides of the cylinder (101) along the radial direction of the rotary cavity (102), the valve stem seat (103) being located outside the rotary cavity (102) and forming an installation channel (104) connected to the rotary cavity (102), the installation channel (104) being perpendicular to the axial direction of the rotary cavity (102) and the installation channels (104) on both sides of the valve stem seat (103) being coaxially arranged; a sensor seat (105) connected to the surface of the cylinder (101) and protruding outward along the radial direction of the rotary cavity (102), the sensor seats (105) being spaced apart and the projections of all the sensor seats (105) in their own axial direction being located within the contour range of the rotary cavity (102), the valve stem seat (103) being connected to at least one of the sensor seats (105).

2. The fixed ball valve body casting according to claim 1, wherein: the sensor seats (105) are uniformly distributed in the axial and circumferential directions of the rotary cavity (102).

3. The fixed ball valve body casting according to claim 1 or 2, wherein: the fixed ball valve body casting further comprises a connecting flange (106); the connecting flange (106) is connected to both ends of the cylinder (101) along the axial direction of the rotary cavity (102) and is coaxially arranged with the rotary cavity (102), and the valve stem seat (103) is connected to one of the connecting flanges (106).

4. The fixed ball valve body casting according to claim 1, wherein: the fixed ball valve body casting further comprises a plurality of nameplate seats (107) connected to the cylinder (101); all the nameplate seats (107) protrude in the same direction from the surface of the cylinder (101) and are flush on the side away from the cylinder (101).

5. The fixed ball valve body casting according to claim 4, wherein: the nameplate seats (107) and the sensor seats (105) are distributed on both sides of the installation channel (104).

6. The fixed ball valve body casting according to claim 1, wherein: the rotary cavity (102) has at least a first cavity (108), a second cavity (109), a third cavity (110), and a fourth cavity (111) sequentially distributed along its own axial direction; the shape of the first cavity (108) is adapted to the shape of a ball on a target valve stem, the cross-sectional diameters of the second cavity (109) and the third cavity (110) gradually decrease along their own axial direction, and the fourth cavity (111) is a cylindrical cavity with a diameter smaller than the minimum diameter of the third cavity (110).

7. The fixed ball valve body casting according to claim 6, wherein: The barrel (101) comprises a first sidewall (112) for forming the first cavity (108) and a second sidewall (113) for forming a fourth cavity (111), and further comprises a third sidewall (114) capable of forming a smooth transition between the first sidewall (112) and the second sidewall (113); The third sidewall (114) comprises a first arc segment (115), a second arc segment (116) and a third arc segment (117) connected in sequence, the first arc segment (115) and the third arc segment (117) arch towards the center of the rotary cavity (102), and the second arc segment (116) arches in a direction away from the center of the rotary cavity (102).

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