Integral type double-blocking double-discharging high-temperature and high-pressure ball valve

Abstract

The invention discloses an integral type double-blocking double-discharging high-temperature and high-pressure ball valve, and relates to the field of valves. According to the scheme, the valve comprises a valve body, the middle of the valve body is through, and the two ends are used for being in butt joint with pipelines; the valve element is connected into the valve body in a rotating and sealing mode and used for controlling on-off of the interior of the valve body, the valve element comprises a spherical body connected with the valve body in a rotating and sealing mode, and the spherical body comprises a main ball body and hemispherical blocks distributed on the two sides of the main ball body and connected with the main ball body in a concentric sliding and sealing mode; and the two hemispherical blocks are used for moving in opposite directions to control the on-off of the interior of the valve body in advance. The hemispherical blocks are connected to the two sides of the main ball body in a sliding and sealing mode, the two hemispherical blocks move in the opposite directions to control on-off of the interior of the valve body in advance, the situation that when the main ball body is closed, the sealing performance is reduced due to long-term single-side pressing is avoided, and therefore the service life of the valve element is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of valves, and particularly to an integral double-block and double-discharge high-temperature and high-pressure ball valve. Background Art

[0002] A double-discharge ball valve is a ball valve with two valve cores; for example, an integral double-block and double-discharge ball valve disclosed in the publication number CN108869780A includes a first connecting pipe, a valve body, and a second connecting pipe. The second connecting pipe is arranged on one side of the valve body away from the first connecting pipe. When the valve core of this patent is closed, it is stressed on one side. When used in a high-temperature and high-pressure environment for a long time, the single-sided sealing performance of the valve core will decline. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an integral double-block and double-discharge high-temperature and high-pressure ball valve to achieve bilateral closing and improve the service life of the valve core.

[0004] To achieve the above technical purpose, the present invention provides an integral double-block and double-discharge high-temperature and high-pressure ball valve: It includes: a valve body, which is penetrated in the middle and both ends are used for connecting pipelines; a valve core, which is rotationally and sealingly connected in the valve body and is used to control the on-off inside the valve body. The valve core includes a spherical body that is rotationally and sealingly connected to the valve body. The spherical body includes a main sphere and hemispherical blocks that are distributed on both sides of the main sphere and are concentrically and slidingly sealedly connected to the main sphere. The two hemispherical blocks are used to move towards each other to control the on-off inside the valve body first.

[0005] Preferably, the valve core further includes: a flow guide cover, the outer shapes of both sides of which respectively coincide with the outer spherical surface of the spherical body and the inner cavity wall of the valve body; a first driving member, both ends of which are respectively fixedly connected to the flow guide cover and the hemispherical block, and is used to drive the hemispherical block to slide on the main sphere.

[0006] Preferably, the first driving member includes: a cylinder barrel, the end of which is fixedly connected to the flow guide cover; a cylinder rod, one end of which is slidingly and sealingly connected to the cylinder barrel, and the other end of which is fixedly connected to the outer surface of the hemispherical block.

[0007] Preferably, a sealing gasket is embedded and fixed on the relative surface of the flow guide cover and the spherical body.

[0008] Preferably, a second driving member is fixedly arranged on the outer surface of the valve body. The second driving member includes: a housing, which is fixed on the valve body; a worm gear, a connecting shaft is fixed in the middle of the main sphere, and the worm gear is sleeved and fixed on the connecting shaft; a worm, which is rotatably connected to the housing and meshes with the worm gear; a reduction motor, which is fixed on the housing, and the output part is fixedly connected to the end of the worm.

[0009] Preferably, it is characterized in that an oil pump is fixed to the outer surface of the valve body, and the output part and the input part of the oil pump are respectively connected to the two ends of the cylinder through a conduit.

[0010] Preferably, it is characterized in that the valve body comprises a first valve body and a second valve body which are fixed by relative connection, and a spherical body is provided in each of the first valve body and the second valve body to control the individual opening and closing of the first valve body and the second valve body.

[0011] Preferably, it is characterized in that a discharge cavity is formed between the first valve body and the second valve body, a discharge pipe is fixed to the outer surface of the valve body, and the discharge pipe is connected to the discharge cavity.

[0012] Preferably, it is characterized in that the opposite surfaces of the two spherical bodies are slidably sealed and connected with sealing rings, a spring is abutted between the two sealing rings, and the spring is used to provide elastic force for the sealing rings so that the two sealing rings abut and seal with the first valve body and the second valve body respectively.

[0013] Preferably, it is characterized in that a first connecting seat is fixed to one end of the first valve body away from the second valve body, and a second connecting seat is fixed to one end of the second valve body away from the first valve body.

[0014] It can be seen from the above technical solutions that the present application has the following beneficial effects: 1: By sliding and sealing the two sides of the main ball with hemispherical blocks, the two hemispherical blocks move toward each other to control the on-off of the valve body, so as to avoid the decrease of sealing caused by long-term unilateral pressure when the main ball is closed, thereby improving the service life of the valve core.

[0015] 2: The two hemisphere blocks move toward each other to control the on / off of the valve body. At this time, the liquid or gas inside the two main spheres and between the first valve body and the second valve body can be directly discharged. Closing the main sphere can prevent the surface of the main sphere from being contaminated by liquid or gas, further improving the service life of the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the overall structure of an integrated double-blocking and double-discharging high-temperature and high-pressure ball valve provided by the present invention; Figure 2 A schematic cross-sectional view of an integrated double-blocking and double-discharging high-temperature and high-pressure ball valve provided by the present invention; Figure 3 Explosion structure schematic diagram of an integral double-block double-discharge high-temperature and high-pressure ball valve provided by the present invention; Figure 4 Overall structure schematic diagram of the valve core of an integral double-block double-discharge high-temperature and high-pressure ball valve provided by the present invention; Figure 5 Cross-sectional structure schematic diagram of the valve body of an integral double-block double-discharge high-temperature and high-pressure ball valve provided by the present invention; Figure 6 Front view structure schematic diagram of an integral double-block double-discharge high-temperature and high-pressure ball valve provided by the present invention; Figure 7 Structure schematic diagram of the closed state of the hemispherical block of an integral double-block double-discharge high-temperature and high-pressure ball valve provided by the present invention.

[0018] Description of the drawings: 1. Valve body; 11. First valve body; 111. First connection seat; 12. Second valve body; 121. Second connection seat; 122. Discharge pipe; 13. Discharge cavity; 2. Valve core; 21. Main sphere; 211. Hemispherical block; 212. Connecting shaft; 22. Flow guide cover; 221. Sealing gasket; 23. First driving member; 231. Cylinder barrel; 232. Cylinder rod; 3. Second driving member; 31. Worm gear; 32. Worm; 33. Reduction motor; 4. Oil pump; 5. Sealing ring; 51. Spring. Detailed implementation manners

[0019] The following description is essentially exemplary only and is not intended to limit the present disclosure, its application, and uses. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. Each drawing only schematically shows the concept and principle of the implementation manners of the present disclosure, and does not necessarily show the specific dimensions and their ratios of the implementation manners of the present disclosure. In a specific part of a specific drawing, the relevant details or structures of the implementation manners of the present disclosure may be illustrated in an exaggerated manner. Embodiment

[0020] Referring to Figure 1 and Figure 2 as shown, an integral double-block double-discharge high-temperature and high-pressure ball valve includes a valve body 1 and a valve core 2. The middle part of the valve body 1 is through, and both ends are used to dock pipelines. There are two valve cores 2, and both valve cores 2 can independently control the on-off inside the valve body 1. When both valve cores 2 are closed, a closed independent chamber is formed between the two valve cores 2. At this time, it is not necessary to empty the pipelines at both ends of the valve body 1. By observing the closed independent chamber between the two valve cores 2, it can be known whether there is liquid leakage or air leakage between the valve body 1 and the valve core 2.

[0021] Specifically, referring to Figure 2 、 Figure 3and Figure 4 As shown, the valve core 2 is rotationally and sealingly connected inside the valve body 1. The valve core 2 includes a spherical body that is rotationally and sealingly connected to the valve body 1. The spherical body includes a main sphere 21 and hemispherical blocks 211 that are distributed on both sides of the main sphere 21 and are concentrically and slidingly sealed to the main sphere 21. The two hemispherical blocks 211 are used to move towards each other to first control the on-off inside the valve body 1. The main sphere 21 and the valve body 1 are axially hollow for the flow of liquid or gas. The main sphere 21 and the hemispherical blocks 211 form a spherical body; Exemplarily, when the valve body 1 is closed, by the two hemispherical blocks 211 moving towards each other and combining, the internal passage of the valve body 1 can be closed; The purpose is that by the two hemispherical blocks 211 moving towards each other and combining, the pressures received by the two hemispherical blocks 211 are the same, avoiding the problem of unilateral force, and by first closing the internal passage of the valve body 1, the liquid or gas in the main sphere 21 can be drained first before closing, avoiding the long-term static retention of liquid or gas in the main sphere 21 from polluting the inner wall of the main sphere 21.

[0022] The valve core 2 further includes a flow guide cover 22 and a first driving member 23. The outer shapes on both sides of the flow guide cover 22 respectively match the outer spherical surface of the spherical body and the inner cavity wall of the valve body 1 to ensure the sealing between the flow guide cover 22 and the valve body 1. A sealing gasket 221 is fixedly embedded on the opposite surface of the flow guide cover 22 and the spherical body. The sealing gasket 221 is used to ensure the sealing between the flow guide cover 22 and the surface of the spherical body. Specifically, the sealing gasket 221 not only fits with the main sphere 21 but also with the surface of the hemispherical block 211; Both ends of the first driving member 23 are fixedly connected to the flow guide cover 22 and the hemispherical block 211 respectively, and are used to drive the hemispherical block 211 to slide on the main sphere 21. Specifically, the first driving member 23 includes a cylinder barrel 231 and a cylinder rod 232. Both the cylinder barrel 231 and the cylinder rod 232 are arc-shaped, and the arc degrees match the surface arc degree of the spherical body. The end of the cylinder barrel 231 is fixedly connected to the flow guide cover 22; one end of the cylinder rod 232 is slidingly and sealingly connected to the cylinder barrel 231, and the other end of the cylinder rod 232 is fixedly connected to the outer surface of the hemispherical block 211. An oil pump 4 is fixedly installed on the outer surface of the valve body 1. The output part and the input part of the oil pump 4 are respectively communicated with both ends of the cylinder barrel 231 through conduits; Exemplarily, when power is provided to the first driving member 23, the oil pump 4 works, fills high-pressure hydraulic oil into the cylinder barrel 231, pulls the cylinder rod 232 to drive the hemispherical block 211 to slide on the main sphere 21. Conversely, by filling high-pressure hydraulic oil into the other end of the cylinder barrel 231, the cylinder rod 232 can be pushed to drive the hemispherical block 211 to slide in the other direction; It is worth mentioning that in some embodiments, the oil pump 4 can also be replaced with an air pump, and the first driving member 23 can also be replaced with an electric push rod or other related structures that can provide reciprocating motion.

[0023] Refer to Figure 7As shown, a second driving member 3 is fixed to the outer surface of the valve body 1. The second driving member 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. A connecting shaft 212 is fixed to the middle of the main sphere 21, 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 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. Exemplarily, the reduction motor 33 drives the worm 32 to drive the worm gear 31 to rotate, so that the worm gear 31 drives the connecting shaft 212 to rotate, and the connecting shaft 212 can drive the main sphere 21 to rotate; In some embodiments, the second driving member 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, and the impeller is driven by pneumatic or hydraulic power to drive the connecting shaft 212 to rotate to control the opening and closing of the main sphere 21.

[0024] In this embodiment, the second driving member 3 controls the opening and closing of the valve body 1 by controlling the main sphere 21 to rotate 180 degrees, and the oil pump 4 controls the sliding of the hemispherical block 211 through the second driving member 3 to also control the opening and closing inside the valve body 1. In a double-guarantee manner, even if one of the second driving member 3 or the oil pump 4 has a problem, it can ensure the control of the opening and closing inside the valve body 1.

[0025] Specifically, referring to Figure 2 、 Figure 5 and Figure 6 As shown, the valve body 1 includes a first valve body 11 and a second valve body 12 that are fixedly connected by docking. Separate spherical bodies are provided inside the first valve body 11 and the second valve body 12 to control the separate opening and closing of the first valve body 11 and the second valve body 12. An emission cavity 13 is formed between the first valve body 11 and the second valve body 12. An emission pipe 122 is fixed to the outer surface of the valve body 1, and the emission pipe 122 communicates with the emission cavity 13. Exemplarily, when the hemispherical block 211 is closed, the liquid or gas inside the main sphere 21 flows into the emission cavity 13 and is then discharged through the emission pipe 122 to ensure the cleanliness inside the main sphere 21; It is worth mentioning that the emission pipe 122 is connected with an electromagnetic valve for controlling the opening and closing of the emission pipe 122. In some embodiments, the emission cavity 13 is communicated with a flushing pipe. When the hemispherical block 211 is closed, the flushing pipe is connected to an external clean water source, and clean water is injected into the emission cavity 13 and then discharged through the emission pipe 122 to clean the emission cavity 13 and the inside of the main sphere 21.

[0026] Furthermore, referring to Figure 2 and Figure 3As shown, sealing rings 5 are slidably and sealingly connected to the opposite surfaces of the two spherical bodies. A spring 51 is abutted between the two sealing rings 5. The spring 51 is used to provide elastic force for the sealing rings 5 so that the two sealing rings 5 are respectively abutted and sealed against the first valve body 11 and the second valve body 12, and the sealing rings 5 are respectively abutted and sealed against the surfaces of the two main spheres 21, avoiding liquid or gas from entering the chamber where the first driving member 23 is located when the valve body 1 is in circulation.

[0027] A first connection seat 111 is fixed to one end of the first valve body 11 away from the second valve body 12, and a second connection seat 121 is fixed to one end of the second valve body 12 away from the first valve body 11. The first connection seat 111 and the second connection seat 121 are respectively used to connect external pipes that need to control the on-off, and the connection method is such as flange connection.

[0028] In this embodiment, by designing the valve body 1 into a two-section structure of the first valve body 11 and the second valve body 12, it is convenient for the assembly and maintenance of the internal parts of the valve body 1.

[0029] In the above text, the exemplary implementation manners of the solutions proposed in the present disclosure are described in detail with reference to the preferred embodiments. However, those skilled in the art can understand that, without departing from the concept of the present disclosure, various modifications and changes can be made to the above specific embodiments, and various combinations of the various technical features and structures proposed in the present disclosure can be made without exceeding the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. An integral double-block and double bleed high temperature and high pressure ball valve, characterized in that, Comprising: A valve body (1), which is penetrated in the middle and both ends are used for docking pipelines; A valve core (2), which is rotationally and sealingly connected inside the valve body (1) and is used to control the on-off inside the valve body (1). The valve core (2) includes a spherical body that is rotationally and sealingly connected to the valve body (1). The spherical body includes a main sphere (21) and hemispherical blocks (211) that are distributed on both sides of the main sphere (21) and are concentrically and slidingly sealed to the main sphere (21); the two hemispherical blocks (211) are used to move towards each other to control the on-off inside the valve body (1) first.

2. The integral double-block and double-discharge high-temperature and high-pressure ball valve according to claim 1, characterized in that, The valve core (2) further includes: A flow guide cover (22), the outer shapes of both sides of which respectively fit the outer spherical surface of the spherical body and the inner cavity wall of the valve body (1); A first driving member (23), the two ends of which are respectively fixedly connected to the flow guide cover (22) and the hemispherical block (211), and is used to drive the hemispherical block (211) to slide on the main sphere (21).

3. An integral double-block and double-seat high-temperature and high-pressure ball valve according to claim 2, characterized in that, The first driving member (23) includes: A cylinder barrel (231), the end of which is fixedly connected to the flow guide cover (22); A cylinder rod (232), one end of which is slidingly and sealingly connected to the cylinder barrel (231), and the other end is fixedly connected to the outer surface of the hemispherical block (211).

4. An integral double-block and double-discharge high-temperature and high-pressure ball valve according to claim 2, characterized in that, A gasket (221) is fixedly embedded on the opposite surface of the flow guide cover (22) and the spherical body.

5. An integral double-block and double-seat high-temperature and high-pressure ball valve according to claim 1, wherein A second driving member (3) is fixedly arranged on the outer surface of the valve body (1). The second driving member (3) includes: A housing, which is fixed on the valve body (1); A worm gear (31), a connecting shaft (212) is fixedly arranged in the middle of the main sphere (21), and the worm gear (31) is sleeved and fixed on the connecting shaft (212); A worm (32), which is rotatably connected to the housing and meshes with the worm gear (31); A reduction motor (33), which is fixed on the housing, and the output part is fixedly connected to the end of the worm (32).

6. The integral double-block and double-seat high temperature and high pressure ball valve according to claim 3, wherein An oil pump (4) is fixedly arranged on the outer surface of the valve body (1). The output part and the input part of the oil pump (4) are respectively communicated with both ends of the cylinder barrel (231) through pipelines.

7. An integral double-block and double-discharge high-temperature and high-pressure ball valve according to claim 1, characterized in that, The valve body (1) includes a first valve body (11) and a second valve body (12) that are fixedly connected by docking. Separate spherical bodies are arranged inside the first valve body (11) and the second valve body (12) to control the separate on-off of the first valve body (11) and the second valve body (12).

8. An integral double-block and double-discharge high-temperature and high-pressure ball valve according to claim 7, characterized in that, An exhaust cavity (13) is formed between the first valve body (11) and the second valve body (12). An exhaust pipe (122) is fixedly arranged on the outer surface of the valve body (1), and the exhaust pipe (122) is communicated with the exhaust cavity (13).

9. The integral double-block and double-discharge high-temperature and high-pressure ball valve according to claim 8, wherein, Sealing rings (5) are slidingly and sealingly connected to the opposite surfaces of the two spherical bodies. A spring (51) is abutted between the two sealing rings (5). The spring (51) is used to provide elastic force for the sealing rings (5) so that the two sealing rings (5) respectively abut and seal against the first valve body (11) and the second valve body (12).

10. The integral double-block and double-discharge high-temperature and high-pressure ball valve according to claim 8, wherein, A first connection seat (111) is fixed to one end of the first valve body (11) away from the second valve body (12), and a second connection seat (121) is fixed to one end of the second valve body (12) away from the first valve body (11).

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