Integral double-block double-discharge high-temperature high-pressure ball valve

Abstract

The application discloses a whole type double-plugging double-discharging high-temperature high-pressure ball valve and relates to the valve field. The application provides the following scheme, which comprises a valve body, the middle part of which is penetrated through and the two ends of which are used for butt joint pipes; a valve core which is rotatably and sealingly connected in the valve body and is used for controlling the on-off of the inside of the valve body; the valve core comprises a spherical body which is rotatably and sealingly connected with the valve body, and the spherical body comprises a main spherical body and two half-spherical blocks which are distributed on the two sides of the main spherical body and are slidingly and sealingly connected with the main spherical body in a concentric mode; the two half-spherical blocks are used for moving towards each other to control the on-off of the inside of the valve body in advance. The two half-spherical blocks are slidingly and sealingly connected on the two sides of the main spherical body, the on-off of the inside of the valve body is controlled in advance by the movement of the two half-spherical blocks towards each other, the sealing property caused by long-term one-side pressure of the main spherical body when the main spherical body is closed is avoided, and the service life of the valve core is prolonged.

Description

Technical Field

[0001] This invention relates to the field of valves, and more particularly to an integral double-blocking double-discharge high-temperature and high-pressure ball valve. Background Technology

[0002] A dual-discharge ball valve is a ball valve with two valve cores; for example, an integral double-blocking dual-discharge ball valve disclosed in CN108869780A includes a first connecting pipe, a valve body and a second connecting pipe, wherein the second connecting pipe is provided on the side of the valve body away from the first connecting pipe.

[0003] When the patented valve core is closed, it is subjected to force on one side. In high temperature and high pressure environments, this will eventually lead to a decrease in the sealing performance of the valve core on one side. Summary of the Invention

[0004] In view of this, the purpose of this invention is to propose an integral double-blocking double-discharge high-temperature and high-pressure ball valve to achieve double-sided closure and improve the service life of the valve core.

[0005] To achieve the above technical objectives, the present invention provides an integral double-blocking double-discharge high-temperature and high-pressure ball valve:

[0006] It includes: a valve body, which is through in the middle and has two ends for connecting to pipelines; a valve core, which is rotary sealed and connected to the valve body for controlling the internal on / off state of the valve body. The valve core includes a spherical body that is rotary sealed and connected to the valve body. The spherical body includes a main sphere and hemispherical blocks distributed on both sides of the main sphere and slidably sealed and connected to the main sphere. The two hemispherical blocks are used to move in opposite directions to control the internal on / off state of the valve body.

[0007] Preferably, the valve core further includes: a flow guide, the two sides of which are respectively matched with the outer spherical surface of the sphere and the inner cavity wall of the valve body; and a first driving member, the two ends of which are respectively fixedly connected to the flow guide and the hemispherical block, for driving the hemispherical block to slide on the main sphere.

[0008] Preferably, the first driving component comprises: a cylinder barrel, one end of which is fixedly connected to the guide shield; and a cylinder rod, one end of which is slidably and sealed to the cylinder barrel, and the other end of which is fixedly connected to the outer surface of the hemispherical block.

[0009] Preferably, the guide shield and the spherical body have a sealing gasket embedded and fixed inside the opposing surfaces.

[0010] Preferably, the valve body is characterized in that a second driving component is fixed on the outer surface of the valve body, the second driving component comprising: a housing fixed to the valve body; a worm gear, wherein a connecting shaft is fixed to the middle of the main ball, and the worm gear is sleeved and fixed to the connecting shaft; a worm, which is rotatably connected to the housing and meshes with the worm gear; and a reduction motor fixed to the housing, wherein the output part is fixedly connected to the end of the worm.

[0011] Preferably, the valve body is characterized by having an oil pump fixed on its outer surface, and the output and input parts of the oil pump are connected to both ends of the cylinder via conduits.

[0012] Preferably, the valve body comprises a first valve body and a second valve body fixed together by mutual connection, wherein each of the first valve body and the second valve body is provided with a spherical body to control the individual on / off state of the first valve body and the second valve body.

[0013] Preferably, the first valve body and the second valve body form a discharge chamber, and a discharge pipe is fixed on the outer surface of the valve body, and the discharge pipe is connected to the discharge chamber.

[0014] Preferably, the two spherical bodies are slidably sealed with sealing rings on their opposing surfaces, and a spring is abutted between the two sealing rings. The spring is used to provide elastic force to the sealing rings so that the two sealing rings abut against the first valve body and the second valve body respectively to seal.

[0015] Preferably, the first valve body is fixed with a first connecting seat at one end opposite to the second valve body, and the second valve body is fixed with a second connecting seat at one end opposite to the first valve body.

[0016] As can be seen from the above technical solutions, this application has the following beneficial effects:

[0017] 1: By sliding and sealing hemispherical blocks on both sides of the main ball, the valve body’s internal opening and closing is controlled by the opposing movement of the two hemispherical blocks, avoiding the decrease in sealing caused by long-term unilateral pressure when the main ball is closed, thereby improving the service life of the valve core.

[0018] 2: The valve body is controlled by the opposing movement of two hemispherical blocks. At this time, the liquid or gas inside the two main balls and between the first valve body and the second valve body can be directly discharged. Closing the main balls can prevent the surface of the main balls from being contaminated by liquid or gas, and further improve the service life of the valve core. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of an integral double-blocking double-discharge high-temperature and high-pressure ball valve provided by the present invention;

[0021] Figure 2 A cross-sectional view of an integral double-blocking double-discharge high-temperature and high-pressure ball valve provided by the present invention;

[0022] Figure 3 An exploded structural diagram of an integral double-blocking double-discharge high-temperature and high-pressure ball valve provided by the present invention;

[0023] Figure 4 A schematic diagram of the overall structure of the valve core of an integral double-blocking double-discharge high-temperature and high-pressure ball valve provided by the present invention;

[0024] Figure 5 A cross-sectional view of the valve body of an integral double-blocking double-discharge high-temperature and high-pressure ball valve provided by the present invention;

[0025] Figure 6 A front view schematic diagram of an integral double-blocking double-discharge high-temperature and high-pressure ball valve provided by the present invention;

[0026] Figure 7 This invention provides a schematic diagram of the hemispherical block closed state structure of an integral double-blocking double-discharge high-temperature and high-pressure ball valve.

[0027] Figure Descriptions: 1. Valve body; 11. First valve body; 111. First connecting seat; 12. Second valve body; 121. Second connecting seat; 122. Discharge pipe; 13. Discharge chamber; 2. Valve core; 21. Main ball; 211. Hemispherical block; 212. Connecting shaft; 22. Flow guide; 221. Sealing gasket; 23. First driving component; 231. Cylinder barrel; 232. Cylinder rod; 3. Second driving component; 31. Worm gear; 32. Worm; 33. Gear motor; 4. Oil pump; 5. Sealing ring; 51. Spring. Detailed Implementation

[0028] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of the various embodiments of this disclosure. Certain details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. Example

[0029] See Figure 1 and Figure 2As shown, an integral double-blocking double-discharge high-temperature and high-pressure ball valve includes a valve body 1 and a valve core 2. The valve body 1 is through the middle and has two ends for connecting to pipelines. There are two valve cores 2, and each valve core 2 can independently control the internal opening and closing of the valve body 1. When both valve cores 2 are closed, there is a closed independent chamber between the two valve cores 2. At this time, there is no need to vent the pipelines at both ends of the valve body 1. By observing the closed independent chamber between the two valve cores 2, it is possible to know whether there is a liquid or gas leakage problem between the valve body 1 and the valve core 2.

[0030] For details, please refer to Figure 2 , Figure 3 and Figure 4 As shown, the valve core 2 is rotary sealed and connected to the valve body 1. The valve core 2 includes a spherical body that is rotary sealed and connected to the valve body 1. The spherical body includes a main ball 21 and hemispherical blocks 211 distributed on both sides of the main ball 21 and concentrically slidably sealed and connected to the main ball 21. The two hemispherical blocks 211 are used to move in opposite directions to control the internal opening and closing of the valve body 1. The main ball 21 and the valve body 1 are axially hollow for the flow of liquid or gas. The main ball 21 and the hemispherical blocks 211 constitute a spherical body.

[0031] For example, when the valve body 1 is closed, the internal channel of the valve body 1 can be closed by the two hemispherical blocks 211 moving towards each other and merging.

[0032] The purpose is to make the pressure on the two hemispheres 211 the same by merging the two hemispheres 211 in opposite directions, so as to avoid the problem of one-sided force. Furthermore, by closing the internal channel of the valve body 1 first, the liquid or gas in the main ball 21 can be discharged before closing, so as to avoid the long-term static retention of liquid or gas in the main ball 21 and contamination of the inner wall of the main ball 21.

[0033] The valve core 2 also includes a flow guide 22 and a first drive component 23. The two sides of the flow guide 22 are respectively matched with the outer spherical surface of the sphere and the inner cavity wall of the valve body 1 to ensure the sealing between the flow guide 22 and the valve body 1. A sealing gasket 221 is embedded and fixed in the opposite surface of the flow guide 22 and the sphere. The sealing gasket 221 is used to ensure the sealing between the flow guide 22 and the surface of the sphere. Specifically, the sealing gasket 221 is not only in contact with the main sphere 21 but also in contact with the surface of the hemispherical block 211.

[0034] The first driving component 23 is fixedly connected at both ends to the flow guide 22 and the hemispherical block 211, respectively, for driving the hemispherical block 211 to slide on the main sphere 21. Specifically, the first driving component 23 includes a cylinder 231 and a cylinder rod 232. Both the cylinder 231 and the cylinder rod 232 are arc-shaped, and the arc matches the surface arc of the sphere. The end of the cylinder 231 is fixedly connected to the flow guide 22; one end of the cylinder rod 232 is slidably and sealingly connected to the cylinder 231, and the other end of the cylinder rod 232 is connected to the hemispherical block 211. The outer surface is fixedly connected to the oil pump 4, which is fixed on the outer surface of the valve body 1. The output and input parts of the oil pump 4 are connected to the two ends of the cylinder 231 through conduits. For example, when power is provided to the first driving member 23, the oil pump 4 works to fill the cylinder 231 with high-pressure oil, which pulls the cylinder rod 232 to drive the hemispherical block 211 to slide on the main ball 21. Conversely, by filling the other end of the cylinder 231 with high-pressure oil, the cylinder rod 232 can be pushed to drive the hemispherical block 211 to slide in the other direction.

[0035] It is worth mentioning that in some embodiments, the oil pump 4 can also be replaced with an air pump, and the first drive component 23 can also be replaced with an electric actuator or other related structures that can provide reciprocating motion.

[0036] See Figure 7 As shown, a second driving component 3 is fixed to the outer surface of the valve body 1. The second driving component 3 includes a housing, a worm gear 31, a worm 32, and a reduction motor 33. The housing is fixed to the valve body 1, and a connecting shaft 212 is fixed to the middle of the main ball 21. The worm gear 31 is sleeved and fixed to the connecting shaft 212. The worm 32 is rotatably connected to the housing and meshes with the worm gear 31. The reduction motor 33 is fixed to the housing, and the output part of the reduction motor 33 is fixedly connected to the end of the worm 32. For example, the reduction motor 33 drives the worm 32 to drive the worm gear 31 to rotate, which in turn drives the connecting shaft 212 to rotate. The connecting shaft 212 can then drive the main ball 21 to rotate.

[0037] In some embodiments, the second drive component 3 can be replaced with a handwheel to manually drive the connecting shaft 212 to rotate, or the worm gear 31 can be replaced with an impeller to drive the connecting shaft 212 to rotate via pneumatic or hydraulic power, thereby controlling the opening and closing of the main ball 21.

[0038] In this embodiment, the second drive unit 3 controls the opening and closing of the valve body 1 by controlling the main ball 21 to rotate 180 degrees. The oil pump 4 can also control the opening and closing of the valve body 1 by controlling the sliding of the hemispherical block 211 through the second drive unit 3. Through this dual protection, even if either the second drive unit 3 or the oil pump 4 malfunctions, the opening and closing of the valve body 1 can still be guaranteed.

[0039] For details, please refer to Figure 2 , Figure 5 and Figure 6As shown, the valve body 1 includes a first valve body 11 and a second valve body 12 fixed together. Both the first valve body 11 and the second valve body 12 are provided with spherical bodies to control the individual opening and closing of the first valve body 11 and the second valve body 12. A discharge chamber 13 is formed between the first valve body 11 and the second valve body 12. A discharge pipe 122 is fixed on the outer surface of the valve body 1 and is connected to the discharge chamber 13. For example, when the hemispherical block 211 is closed, the liquid or gas in the main ball 21 flows into the discharge chamber 13 and is discharged through the discharge pipe 122, ensuring that the inside of the main ball 21 is clean.

[0040] It is worth mentioning that the discharge pipe 122 is connected to a solenoid valve to control the opening and closing of the discharge pipe 122. In some embodiments, the discharge chamber 13 is connected to a flushing pipe. When the hemispherical block 211 is closed, it is connected to an external clean water source through the flushing pipe to inject clean water into the discharge chamber 13 and then discharge it through the discharge pipe 122, which can clean the discharge chamber 13 and the main ball 21.

[0041] For further details, please refer to [link / reference]. Figure 2 and Figure 3 As shown, the two spherical bodies are slidably sealed with sealing rings 5 ​​on their opposite surfaces. A spring 51 is abutted between the two sealing rings 5. The spring 51 is used to provide elastic force to the sealing rings 5 ​​so that the two sealing rings 5 ​​abut against the first valve body 11 and the second valve body 12 respectively and seal against the surfaces of the two main spheres 21 respectively, so as to prevent liquid or gas from entering the chamber where the first driving member 23 exists when the valve body 1 is in flow.

[0042] The first valve body 11 is fixed with a first connecting seat 111 at one end away from the second valve body 12, and the second valve body 12 is fixed with a second connecting seat 121 at one end away from the first valve body 11. The first connecting seat 111 and the second connecting seat 121 are respectively used to connect external pipes that need to be controlled to open or close, and the connection method is such as flange connection.

[0043] In this embodiment, the valve body 1 is designed as a two-section structure of a first valve body 11 and a second valve body 12, which facilitates the assembly and maintenance of the internal parts of the valve body 1.

[0044] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. An integral double-blocking double-discharge high-temperature and high-pressure ball valve, characterized in that, include: The valve body (1) is through in the middle and has two ends for connecting to pipelines; The valve core (2) is rotary sealed and connected inside the valve body (1) for controlling the internal opening and closing of the valve body (1). The valve core (2) includes a spherical body rotary sealed and connected to the valve body (1). The spherical body includes a main ball (21) and hemispherical blocks (211) distributed on both sides of the main ball (21) and concentrically slidably sealed and connected to the main ball (21). The two hemispherical blocks (211) are used to move in opposite directions to control the internal opening and closing of the valve body (1). The valve core (2) also includes: The flow guide (22) has two sides whose shapes match the outer spherical surface of the sphere and the inner wall of the valve body (1), respectively; The first driving component (23) is fixedly connected at both ends to the flow guide (22) and the hemispherical block (211) respectively, and is used to drive the hemispherical block (211) to slide on the main sphere (21); The first driving element (23) includes: The cylinder barrel (231) is fixedly connected at its end to the guide shield (22); The cylinder rod (232) is slidably and sealed at one end to the cylinder barrel (231), and fixedly connected at the other end to the outer surface of the hemispherical block (211); An oil pump (4) is fixed on the outer surface of the valve body (1). The output and input parts of the oil pump (4) are connected to both ends of the cylinder (231) through conduits. The valve body (1) includes a first valve body (11) and a second valve body (12) fixed together. Both the first valve body (11) and the second valve body (12) are provided with spherical bodies to control the individual opening and closing of the first valve body (11) and the second valve body (12). A discharge chamber (13) is formed between the first valve body (11) and the second valve body (12). A discharge pipe (122) is fixed on the outer surface of the valve body (1), and the discharge pipe (122) is connected to the discharge chamber (13).

2. The integral double-blocking double-discharge high-temperature and high-pressure ball valve according to claim 1, characterized in that, A sealing gasket (221) is embedded and fixed on the opposite surface of the spherical body of the flow guide (22).

3. The integral double-blocking double-discharge high-temperature and high-pressure ball valve according to claim 1, characterized in that, A second driving member (3) is fixed to the outer surface of the valve body (1), and the second driving member (3) includes: The housing is fixed to the valve body (1); Worm gear (31), the middle part of the main ball (21) is fixed with a connecting shaft (212), and the worm gear (31) is sleeved and fixed on the connecting shaft (212); The worm (32) is rotatably connected to the housing and meshes with the worm wheel (31); The geared motor (33) is fixed on the housing, and its output part is fixedly connected to the end of the worm (32).

4. The integral double-blocking double-discharge high-temperature and high-pressure ball valve according to claim 1, characterized in that, Both of the two spherical bodies are slidably sealed with sealing rings (5), and a spring (51) is abutted between the two sealing rings (5). The spring (51) is used to provide elastic force to the sealing rings (5) so that the two sealing rings (5) abut against the first valve body (11) and the second valve body (12) respectively.

5. The integral double-blocking double-discharge high-temperature and high-pressure ball valve according to claim 1, characterized in that, The first valve body (11) is fixed with a first connecting seat (111) at one end away from the second valve body (12), and the second valve body (12) is fixed with a second connecting seat (121) at one end away from the first valve body (11).

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