High-temperature bidirectional alloy hard sealing floating ball valve

Abstract

The invention relates to a high-temperature two-way alloy hard sealing floating ball valve which is characterized in that an adjusting assembly used for driving a floating ball valve assembly to keep communication is arranged in the floating ball valve assembly, and sealing assemblies used for sealing the adjusting assembly are arranged on the left side and the right side of the adjusting assembly; the driving device comprises a fixing assembly for driving the adjusting assembly to rotate, and a driving assembly for driving the fixing assembly to rotate is fixedly installed at the top end of the fixing assembly. When the ball valve is used, the handle contained in the long-strip-shaped groove in the handle can be rotated, then the inserting rod is inserted into the second fixing hole, the handle can be fixed, then the valve rod is controlled to rotate through the handle, meanwhile, the through hole in the ball body is communicated with the valve cavity and the channel, and at the moment, the valve seat is tightly attached to the ball body under the elasticity of the disc spring through the valve seat sealing ring; therefore, the floating ball valve is suitable for floating ball valves with various pressure grades of high pressure, medium pressure and low pressure and various specifications; and two-way sealing can be achieved, and the use requirement of a process pipeline is met.

Description

Technical Field

[0001] The invention relates to the technical field of floating ball valves, in particular to a high-temperature bidirectional alloy hard-sealed floating ball valve. Background Art

[0002] In the material systems such as petrochemical, coal chemical, polysilicon, power plant ash removal, mud, boiler slag removal, etc., the medium temperature is high, and the O-ring is used in the design of the conventional floating ball valve sealing pair to achieve the seal between the valve seat and the valve body. For example, as shown in a floating ball valve with Chinese patent application number CN202322504209.9, the top of the first valve body is plugged with a valve stem, the bottom position of the valve stem is crimped with a split ring, and the bottom end abuts against the ball, the valve stem is crimped and sealed to the first valve body through a pressure plate, the top of the valve stem is movably connected to the handle, the ball and the first valve body are sealed and connected by a sealing ring, and the first valve body and the second valve body are fixedly connected by bolts; a blind hole is provided at the bottom outer wall of the valve stem, and the blind hole abuts against the ball through a spring.

[0003] However, when the handle is used to control the ball to control the connection of the ball valve, it is difficult for rubber to withstand high temperatures and it is difficult to achieve a true two-way seal. At the same time, the rubber ring will cause mutual wear between the rubber ring and the ball during long-term use, thus affecting the two-way seal of the ball valve. In addition, the length of the handle of the floating ball valve is fixed and its length is not allowed to be lengthened, which makes it time-consuming and laborious to use. Summary of the invention

[0004] In order to solve the problems mentioned in the above background technology that rubber is difficult to withstand high temperature and difficult to achieve true two-way sealing, and the rubber ring will cause mutual wear between the rubber ring and the ball body during long-term use, thereby affecting the two-way sealing of the ball valve; and the handle of the floating ball valve has a fixed length and its length is not allowed to be lengthened, which makes it very time-consuming and laborious to use, the present invention provides the following technical solutions:

[0005] A high-temperature bidirectional alloy hard-sealed floating ball valve comprises a floating ball valve device connected to a pipeline, wherein a driving device for driving the floating ball valve device to open and close is arranged at the top of the floating ball valve device.

[0006] The floating ball valve device includes a floating ball valve assembly for connecting to a pipeline, an adjusting assembly for driving the floating ball valve assembly to maintain communication is arranged inside the floating ball valve assembly, and the adjusting assembly is connected to the driving device, and sealing assemblies for sealing the adjusting assembly are arranged on the left and right sides of the adjusting assembly.

[0007] The driving device comprises a fixing component for driving the adjusting component to rotate, and a driving component for driving the fixing component to rotate is fixedly mounted on the top end of the fixing component.

[0008] Furthermore, the floating ball valve assembly includes a ball valve seat arranged on the pipeline, a valve cavity for assisting the rotation of the adjustment assembly is opened in the middle of the seat body of the ball valve seat, and channels for maintaining the flow of liquid in the pipeline are opened on the left and right sides of the valve cavity.

[0009] Furthermore, the seat body of the ball valve seat is provided with a receiving groove for assisting the sealing assembly to seal the adjusting assembly, and there are two receiving grooves. The seat body of the ball valve seat is provided with locking holes for fixing the ball valve seat to the pipeline, and there are eight locking holes. The eight locking holes are distributed in a circular array on the left and right ends of the ball valve seat, and the locking holes are penetrated by fixing bolts and threadedly connected with nuts at the same time, so that the ball valve seat can be fixed to the pipeline.

[0010] Furthermore, the regulating component includes a sphere arranged in the valve cavity to keep the two channels connected. The seal between the sphere and the ball valve seat uses high-hardness, wear-resistant and corrosion-resistant cemented carbide, which can not only maintain the high-temperature use of the sealing surface, but also prevent damage caused by the invasion of granular media; at the same time, a through hole is opened in the middle of the sphere to facilitate keeping the two channels, the through hole and the valve cavity connected, so as to realize the flow of liquid in the pipeline; the top of the sphere is opened with a fixing groove for connecting with the fixing component.

[0011] Furthermore, the sealing assembly includes a valve seat arranged in the channel for sealing the ball, a valve seat sealing ring for driving the valve seat close to the ball is arranged at one end of the valve seat away from the ball, a support ring is arranged at one end of the valve seat sealing ring away from the valve seat, and a disc spring for driving the valve seat close to the ball is arranged at one end of the support ring away from the valve seat sealing ring.

[0012] Furthermore, the fixing assembly includes a packing gland arranged at the top of the ball valve seat, a valve stem for rotation is arranged inside the packing gland, a fixing block for connecting to the fixing groove is fixedly installed at the bottom end of the valve stem, and a handle for driving the valve stem to rotate is arranged at the top end of the valve stem.

[0013] Furthermore, a long groove for storing the drive assembly is formed at the front end of the handle, a fixing hole 1 for locking the stored drive assembly is formed at the top end of the handle, and a fixing hole 2 for locking the unfolded drive assembly is formed at the top end of the handle, and the fixing hole 2 is located on the left side of the fixing hole 1.

[0014] Furthermore, the driving assembly includes a handle arranged in the elongated groove for rotation, and a fixing hole three is provided at the top of the handle.

[0015] Furthermore, a bolt for fixing the packing gland on the ball valve seat is arranged at the top end of the packing gland, and the bolt passes through the packing gland and is threadedly connected to the packing gland.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By arranging the adjusting component, the sealing component and the driving device, when it is necessary to keep the pipeline connected through the floating ball valve device, the handle received in the long groove in the handle can be rotated, and then the plug rod can be inserted into the second fixing hole to fix the handle, and then the valve stem can be controlled to rotate through the handle, and at the same time, the through hole on the ball can be connected with the valve cavity and the channel. At this time, the valve seat sealing ring is controlled by the elasticity of the disc spring, so that the valve seat is close to the ball, and the medium in the pipeline can be circulated. It is suitable for floating ball valves of various pressure levels and specifications of high, medium and low pressures; and bidirectional sealing can be achieved to meet the use requirements of process pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a cross-sectional view of the ball valve seat of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the floating ball valve assembly of the present invention;

[0021] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 It is a schematic diagram of the structure of the driving device of the present invention;

[0023] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle.

[0024] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0025] 100-floating ball valve device, 110-floating ball valve assembly, 111-ball valve seat, 112-locking hole, 113-storage groove, 114-channel, 115-valve chamber, 120-adjusting assembly, 121-ball, 122-fixing groove, 130-sealing assembly, 131-disc spring, 132-flexible graphite sealing ring, 133-support ring, 133-valve seat sealing ring, 134-valve seat;

[0026] 200-driving device, 210-fixing assembly, 211-packing gland, 212-fixing block, 213-valve stem, 214-handle, 215-fixing hole 1, 216-fixing hole 2, 217-long groove, 220-driving assembly, 221-handle, 222-fixing hole 3;

[0027] 001-Bolt. DETAILED DESCRIPTION

[0028] The preferred specific embodiments for implementing the present invention are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0029] See also Figure 1-Figure 6 The present invention provides a high-temperature bidirectional alloy hard-sealed floating ball valve.

[0030] The invention comprises a floating ball valve device 100 connected to a pipeline, and a driving device 200 for driving the floating ball valve device 100 to open and close is arranged at the top end of the floating ball valve device 100.

[0031] The floating ball valve device 100 includes a floating ball valve assembly 110 for connecting to a pipeline, an adjusting assembly 120 for driving the floating ball valve assembly 110 to maintain communication is provided in the floating ball valve assembly 110, and the adjusting assembly 120 is connected to the driving device 200, and sealing assemblies 130 for sealing the adjusting assembly 120 are provided on the left and right sides of the adjusting assembly 120.

[0032] The floating ball valve assembly 110 includes a ball valve seat 111 arranged on the pipeline. The left and right ends of the ball valve seat 111 are provided with locking holes 112 for fixing the ball valve seat 111 on the pipeline. There are eight locking holes 112, which are distributed in a circular array on the left and right ends of the ball valve seat 111. The locking holes 112 are penetrated by fixing bolts and are threadedly connected with nuts at the same time, so that the ball valve seat 111 can be fixed on the pipeline.

[0033] A valve cavity 115 for assisting the rotation of the regulating component 120 is provided in the middle of the seat body of the ball valve seat 111, and channels 114 for maintaining the circulation of liquid in the pipeline are provided on the left and right sides of the valve cavity 115, so that the valve cavity 115 and the channels 114 on both sides can be controlled to maintain communication through the rotation of the regulating component 120, thereby realizing the flow of liquid in the pipeline hole; a receiving groove 113 for assisting the sealing component 130 to seal the regulating component 120 is provided in the seat body of the ball valve seat 111, and there are two receiving grooves 113, so that the sealing component 130 in the receiving groove 113 can be used to seal the regulating component 120 to prevent leakage of the pipeline medium.

[0034] The regulating assembly 120 includes a sphere 121 arranged in the valve cavity 115 to keep the two channels 114 connected. The seal between the sphere 121 and the ball valve seat 111 uses high-hardness, wear-resistant and corrosion-resistant cemented carbide, which can not only maintain the high-temperature use of the sealing surface, but also prevent the invasion of granular media and cause damage; at the same time, a through hole is opened in the sphere 121 to facilitate the connection between the two channels 114, the through hole and the valve cavity 115, so as to realize the flow of liquid in the pipeline; and the sphere 121 is driven by the driving device 200 to rotate perpendicular to the direction of the valve flow channel, thereby realizing the connection and disconnection of the pipeline medium; the top of the sphere 121 is opened with a fixing groove 122 for connecting with the fixing assembly 210.

[0035] The sealing assembly 130 includes a valve seat 134 arranged in the channel 114 for sealing the ball 121, and a valve seat sealing ring 133 for driving the valve seat 134 close to the ball 121 is arranged at one end of the valve seat 134 away from the ball 121, and the material of the valve seat sealing ring 133 is carbon fiber to avoid the problem of medium leakage when the ball 121 is opened and closed; a support ring 132 is arranged at one end of the seat sealing ring 133 away from the valve seat 134, and a disc spring 131 for driving the valve seat 134 close to the ball 121 is arranged at one end of the support ring 132 away from the valve seat sealing ring 133, and the disc spring 131 is a butterfly spring; the other end of the valve seat sealing ring 133 contacts the back side of the valve seat 134, and the contact surfaces at both ends of the valve seat sealing ring 133 are set as wedge-shaped surfaces, so as to provide sufficient sealing pressure ratio and achieve sealing under the action of the disc spring 131.

[0036] When the medium in the float valve device 100 flows from the disc spring 131 to the ball 121, under the joint action of the disc spring 131 and the medium, the support ring 133 pushes the support ring 132, the valve seat sealing ring 133 and the valve seat 134 close to the ball 121, the ball 121 is close to the downstream valve seat 134, and the downstream valve seat 134 presses the valve seat sealing ring 133, thereby realizing the pipeline medium cutting function, which belongs to the automatic sealing type of spring-assisted sealing.

[0037] When the medium flows in the opposite direction, that is, when the medium flows from the ball 121 to the disc spring 131, the medium acts on the ball 121 along the flow direction of the medium. The ball 121, the valve seat 134, the valve seat sealing ring 133, and the support ring 132 act on the disc spring 131 in sequence. The disc spring 131 bears all the pipeline medium force. The disc spring 131 here uses two butterfly springs superimposed together to fully ensure the effective use of the butterfly spring.

[0038] The driving device 200 includes a fixing component 210 for driving the adjusting component 120 to rotate, and a driving component 220 for driving the fixing component 210 to rotate is fixedly mounted on the top end of the fixing component 210 .

[0039] The fixing assembly 210 includes a packing gland 211 arranged at the top of the ball valve seat 111, and a bolt 001 for fixing the packing gland 211 on the ball valve seat 111 is arranged at the top of the packing gland 211, and the bolt 001 penetrates the packing gland 211 and is threadedly connected to the packing gland 211, and is compressed by using a screw 16 between the packing glands 15, thereby achieving the sealing of the valve stem 213 to prevent the pipeline medium from leaking out; a valve stem 213 for rotation is arranged in the packing gland 211, and a fixing block 212 for connecting with the fixing groove 122 is fixedly installed at the bottom end of the valve stem 213, and the fixing block 212 is inserted into the fixing groove 122 at the top of the ball 121, and the fixing block 212 is welded by welding. It is connected to the fixing groove 122, so that the clockwise and counterclockwise rotation of the ball 121 is controlled by the valve stem 213, and it is communicated with the valve cavity 115 and the channel 114 through the through hole on the ball 121. At this time, the flexible graphite sealing ring 132 is under the elasticity of the spring 131, and the flexible graphite sealing ring 132 is tightly attached to the ball 121, so that the medium in the pipeline can flow, and the ball 121 can be used to separate the valve cavity 115 and the channel 114; the top of the valve stem 213 is provided with a handle 214 for driving the valve stem 213 to rotate, and the handle 214 is connected to the valve stem 213 through a threaded connection, so that the valve stem 213 can be controlled to drive the ball 121 to rotate by rotating the handle 214.

[0040] The front end of the handle 214 is provided with a long groove 217 for storing the drive assembly 220, the top of the handle 214 is provided with a fixing hole 215 for locking the stored drive assembly 220, and the top of the handle 214 is provided with a fixing hole 216 for locking the unfolded drive assembly 220, and the fixing hole 216 is located on the left side of the fixing hole 215; thus, the drive assembly 220 can be stored in the long groove 217 and fixed by inserting the rod into the fixing hole 215.

[0041] The driving assembly 220 includes a handle 221 arranged in the long groove 217 for rotation. A fixing hole 3 222 is provided at the top of the handle 221 to facilitate lengthening the handle 214. When it is inconvenient to drive the handle 214 to drive the valve stem 213 to rotate, the handle 221 stored in the handle 214 can be unfolded and the plug rod can be inserted into the fixing hole 216 to lengthen the handle 214. Therefore, when it is necessary to keep the pipeline connected through the floating ball valve device 100, the handle 221 can be opened. The handle 221 received in the long groove 217 in the handle 214 is rotated, and then the insertion rod is inserted into the second fixing hole 216 to fix the handle 221. The valve stem 213 is then controlled to rotate by the handle, and at the same time, the through hole on the ball 121 is communicated with the valve cavity 115 and the channel 114. At this time, the flexible graphite sealing ring 132 is tightly attached to the ball 121 under the elasticity of the spring 131, so that the medium in the pipeline can be circulated, so as to facilitate the medium circulation in the petrochemical plant.

[0042] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the present invention. In addition, any non-creative modifications made to the present invention by those skilled in the art without creative work still fall within the protection scope of the present invention.

Claims

1. A high-temperature bidirectional alloy hard-sealed floating ball valve, characterized in that: It comprises a floating ball valve device (100) connected to a pipeline, wherein a driving device (200) for driving the floating ball valve device (100) to open and close is arranged at the top end of the floating ball valve device (100); The floating ball valve device (100) comprises a floating ball valve assembly (110) for connecting to a pipeline, an adjusting assembly (120) for driving the floating ball valve assembly (110) to maintain communication is arranged inside the floating ball valve assembly (110), and the adjusting assembly (120) is connected to a driving device (200), and sealing assemblies (130) for sealing the adjusting assembly (120) are arranged on the left and right sides of the adjusting assembly (120); The driving device (200) comprises a fixing component (210) for driving the adjusting component (120) to rotate, and a driving component (220) for driving the fixing component (210) to rotate is fixedly mounted on the top end of the fixing component (210).

2. A high temperature bidirectional alloy hard seal floating ball valve according to claim 1, characterized in that: The floating ball valve assembly (110) comprises a ball valve seat (111) arranged on a pipeline, a valve cavity (115) for assisting the rotation of the adjustment assembly (120) is provided in the middle of the seat body of the ball valve seat (111), and channels (114) for maintaining the circulation of liquid in the pipeline are provided on the left and right sides of the valve cavity (115).

3. A high temperature bidirectional alloy hard seal floating ball valve according to claim 2, characterized in that: The seat body of the ball valve seat (111) is provided with a receiving groove (113) for assisting the sealing component (130) to seal the regulating component (120), and there are two receiving grooves (113). The seat body of the ball valve seat (111) is provided with a locking hole (112) for fixing the ball valve seat (111) on the pipeline.

4. A high temperature bidirectional alloy hard seal floating ball valve according to claim 3, characterized in that: The regulating assembly (120) comprises a sphere (121) arranged in the valve cavity (115) to keep the two channels (114) in communication with each other, and a fixing groove (122) for connecting to the fixing assembly (210) is formed at the top of the sphere (121).

5. A high temperature bidirectional alloy hard seal floating ball valve according to claim 4, characterized in that: The sealing assembly (130) includes a valve seat (134) arranged in the channel (114) for sealing the ball (121); a valve seat sealing ring (133) for driving (134) to approach the ball (121) is arranged at one end of the valve seat (134) away from the ball (121); a support ring (132) is arranged at one end of the valve seat sealing ring (133) away from the valve seat (134); and a disc spring (131) for driving the valve seat (134) to approach the ball (121) is arranged at one end of the support ring (132) away from the valve seat sealing ring (133).

6. A high temperature bidirectional alloy hard seal floating ball valve according to claim 2, characterized in that: The fixing assembly (210) comprises a packing gland (211) arranged at the top end of the ball valve seat (111), a valve stem (213) for rotation is arranged inside the packing gland (211), a fixing block (212) for connecting to the fixing groove (122) is fixedly installed at the bottom end of the valve stem (213), and a handle (214) for driving the valve stem (213) to rotate is arranged at the top end of the valve stem (213).

7. A high temperature bidirectional alloy hard seal floating ball valve according to claim 6, characterized in that: The front end of the handle (214) is provided with a long groove (217) for storing the drive assembly (220), the top end of the handle (214) is provided with a fixing hole (215) for locking the stored drive assembly (220), the top end of the handle (214) is provided with a fixing hole (216) for locking the deployed drive assembly (220), and the fixing hole (216) is located on the left side of the fixing hole (215).

8. A high temperature bidirectional alloy hard seal floating ball valve according to claim 7, characterized in that: The driving assembly (220) comprises a handle (221) arranged in the long groove (217) for rotation, and a fixing hole (222) is provided at the top of the handle (221).

9. A high temperature bidirectional alloy hard seal floating ball valve according to claim 6, characterized in that: A bolt (001) for fixing the packing gland (211) on the ball valve seat (111) is provided at the top end of the packing gland (211), and the bolt (001) passes through the packing gland (211) and is threadedly connected to the packing gland (211).

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