CN115899330A - Applied to nuclear power plants with high parameters and large diameter intelligent control check valves - Google Patents

Abstract

A high-parameter large-diameter intelligent control check valve applied to nuclear power plants, including a valve body and a control device, a valve chamber is formed in the valve body, the control device includes a power source and a split output assembly, and the split output assembly includes an output rod and a split connection The split connector separates the output rod into a transmission rod and a connecting rod. The two ends of the transmission rod are connected to the power source and the split connector. The other end of the valve extends into the valve cavity and connects with the valve plate. A split connector is set on the output rod of the control mechanism, so that the output rod becomes a two-stage structure. The power source drives the transmission rod, and the transmission rod is connected by bolts. The connecting piece drives the connecting rod to realize the control of the connecting rod. After a long-term use of the output rod of the split structure, it is convenient to disassemble and repair the control device. When a section of the transmission rod or connecting rod fails, there is no need to replace the entire output rod. rod, thereby reducing maintenance costs.

Description

Applied to nuclear power plants with high parameters and large diameter intelligent control check valves

technical field

The invention relates to the technical field of check valves, in particular to a high-parameter and large-diameter intelligent control check valve used in nuclear power plants.

Background technique

Check valve (also known as check valve) refers to the valve that relies on the flow of the medium itself to automatically open and close the disc to prevent the medium from flowing backward, also known as check valve, one-way valve, reverse flow valve, and back pressure valve. The check valve is a kind of automatic valve, its main function is to prevent the reverse flow of the medium, the reverse rotation of the pump and the drive motor, and the discharge of the container medium. Due to the large size of the existing check valves used in nuclear power plants, the volume of the parts used is also larger than the normal size. Therefore, after the valve plate is opened and closed, the transmission rod that drives the valve plate will wear and tear after long-term operation. Other adverse phenomena need to be replaced. However, due to the large size of the transmission rod, it is not easy to disassemble and assemble, and the production cost is high. Therefore, there is an urgent need for a transmission rod assembly that is easy to disassemble and can reduce maintenance costs. Check valves for nuclear power plants.

Contents of the invention

In view of this, the present invention provides a high-parameter large-diameter intelligent control check valve applied to nuclear power plants.

To achieve the above object, the present invention provides the following technical solutions:

A high-parameter large-diameter intelligent control check valve applied to nuclear power plants, including a valve body and a control device, a valve cavity is formed in the valve body, a valve plate is arranged in the valve cavity, and one end of the control device extends into the valve cavity and Valve plate connection, the control device includes a power source and a split output assembly, the split output assembly includes an output rod and a split connector, and the split connector separates the output rod into a transmission rod and a connecting rod, so The two ends of the transmission rod are correspondingly connected to the power source and the split connecting piece, one end of the connecting rod is connected to the end of the split connecting piece away from the transmission rod, and the other end of the connecting rod extends into the valve cavity to connect with the valve plate.

Preferably, the split connecting piece includes an upper connecting piece and a lower connecting piece, the structures of the upper connecting piece and the lower connecting piece are the same, and both the upper connecting piece and the lower connecting piece have a connecting portion and a disc portion, A connecting groove is provided on the connecting part, and the transmission rod and the connecting rod extend into the corresponding connecting groove to connect with the upper connecting piece and the lower connecting piece.

Preferably, corresponding connecting holes are opened on the disc parts of the upper connecting piece and the lower connecting piece, and connecting bolts are arranged in the connecting holes, and the upper connecting piece and the lower connecting piece are connected and fixed by connecting bolts.

Preferably, a sealing gasket is also provided between the upper connecting piece and the lower connecting piece, and a through hole corresponding to the connecting hole is opened on the sealing gasket, and the connecting bolt passes through the connecting hole of the upper connecting piece and the sealing gasket in turn. The through hole of the gasket extends into the connecting hole of the lower connecting piece to connect and fix the upper connecting piece, the sealing gasket and the lower connecting piece.

Preferably, the valve body is also provided with a fixed bracket, the control device is arranged on the fixed bracket, a fixed cavity is formed in the fixed bracket, a protective tube is arranged in the fixed cavity, and one end of the split output assembly It extends through the fixed cavity into the valve cavity and is connected with the valve plate, and the part of the split output assembly located in the fixed cavity is covered with a protective tube.

Preferably, the protective tube includes an upper protective tube and a lower protective tube, the two ends of the upper protective tube are correspondingly connected to the split connector and the top wall of the fixing chamber, and the two ends of the lower protective tube are correspondingly connected to the split connection parts and the bottom wall of the fixed cavity.

Preferably, the transmission rod and the connecting rod are provided with corresponding sealing rings near the openings of the corresponding connecting grooves.

Preferably, the connecting rod has a connecting rod connecting structure connected with the valve plate, the connecting rod connecting structure includes a connecting block and a movable pin, the connecting block is arranged at the bottom end of the connecting rod, and the connecting block A rotary hole is provided, the movable pin shaft is horizontally arranged in the rotary hole, and the two ends of the movable pin shaft are movably connected with the connecting part of the valve plate.

Preferably, two fixing blocks are arranged on the valve plate, an assembly groove is formed between the fixing blocks for the connecting block to extend into, and corresponding connecting holes are arranged on the fixing block, and the connecting block extends into the assembly After the groove, the two ends of the movable pin extend into the connection hole on the corresponding fixed block to be rotationally connected with the valve plate connection part.

The beneficial effect of the present invention is that: the present invention sets the split connecting piece on the output rod of the control mechanism, so that the output rod becomes a two-stage structure, and the transmission rod is driven by the power source, and the driving rod is connected by a split connecting piece connected by bolts Drive the connecting rod, so as to realize the control of the connecting rod, and achieve the effect of the connecting rod to control the valve plate. The output rod of the split structure can facilitate the disassembly and maintenance of the control device after long-term use. When the transmission rod or the connecting rod When one section fails, there is no need to replace the entire output rod, thereby reducing maintenance costs.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Accompanying drawing 1 is the cross-sectional view of the structure of the present invention in the direction of the main view;

Accompanying drawing 2 is the structural sectional view of side view direction of the present invention;

Accompanying drawing 3 is the enlarged view of place A in accompanying drawing 1;

Accompanying drawing 4 is the enlarged view of B in accompanying drawing 2.

Reference signs:

1. Valve body, 2. Control device, 3. Valve cavity, 4. Valve plate, 5. Power source, 6. Split output assembly, 7. Output rod, 8. Split connector, 9. Transmission rod, 10 , connecting rod, 11, upper connecting piece, 12, lower connecting piece, 13, connecting part, 14, disc part, 15, connecting groove, 16, sealing gasket, 17, connecting hole, 18, connecting bolt, 19, Through hole, 20, fixed bracket, 21, fixed cavity, 22, protective tube, 23, upper protective tube, 24, lower protective tube, 25, sealing ring, 26, ring groove, 27, connecting rod connection structure, 28, connection Block, 29, movable bearing pin, 30, rotating hole, 31, fixed block, 32, assembly groove, 33, connecting rotating hole, 34, valve stem.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The present invention will be further described below in conjunction with the accompanying drawings.

The present invention provides following technical scheme:

As shown in accompanying drawings 1 to 4, the present invention discloses a high-parameter large-caliber intelligent control check valve applied to nuclear power plants, which includes a valve body 1 and a control device 2, and a valve cavity 3 is formed in the valve body 1, and the A valve plate 4 is set in the valve cavity 3, and one end of the control device 2 extends into the valve cavity 3 to connect with the valve plate 4, and a valve stem 34 is also set in the valve cavity 3, and the valve stem 34 is horizontally arranged in the valve cavity , and the valve rod 34 is rotatably connected with the valve plate 4, the control device 2 includes a power source 5 and a split output assembly 6, in this design, the power source 5 is a motor or a cylinder, and the split output assembly 6 It includes an output rod 7 and a split connecting piece 8, the split connecting piece 8 divides the output rod 7 into a transmission rod 9 and a connecting rod 10, and the two ends of the transmission rod 9 are correspondingly connected to the power source 5 and the split connecting piece 8. One end of the connecting rod 10 is connected to the end of the split connecting member 8 away from the transmission rod 9 , and the other end of the connecting rod 10 extends into the valve cavity 3 to connect with the valve plate 4 . Specifically, in this design, a split connector 8 is provided on the output rod 7 of the control mechanism, so that the output rod 7 becomes a two-stage structure, and the transmission rod 9 is driven by the power source 5, and the transmission rod 9 is a split body connected by bolts. The connecting piece 8 drives the connecting rod 10, thereby realizing the control of the connecting rod 10 and achieving the effect of the connecting rod 10 controlling the valve plate 4. The output rod 7 of the split structure can facilitate the control device 2 after long-term use. For disassembly and maintenance, when a section of the transmission rod 9 or the connecting rod 10 fails, there is no need to replace the entire output rod 7, thereby reducing maintenance costs.

Further, the split connector 8 includes an upper connector 11 and a lower connector 12, the upper connector 11 and the lower connector 12 have the same structure, and the upper connector 11 and the lower connector 12 have connection part 13 and disc part 14, the connecting part 13 is provided with a connecting groove 15, and the transmission rod 9 and the connecting rod 10 extend into the corresponding connecting groove 15 to connect with the upper connecting part 11 and the lower connecting part 12. Specifically, the opposite end surfaces of the disc portion 14 between the upper connecting piece 11 and the lower connecting piece 12 are all smooth structures, which can make the upper connecting piece 11 and the lower connecting piece 12 closely fit the seal between the two. The sealing surfaces at both ends of the gasket 16 can improve the sealing performance at the position of the split connector 8 .

Further, corresponding connecting holes 17 are provided on the disc parts 14 of the upper connecting piece 11 and the lower connecting piece 12, and connecting bolts 18 are arranged in the connecting holes 17, and the upper connecting piece 11 and the lower connecting piece 12 Connect and fix by connecting bolt 18. Specifically, this design uses connecting bolts 18 to connect the upper connecting piece 11 and the lower connecting piece 12, and in this embodiment, the number of connecting bolts 18 is based on the corresponding discs of the upper connecting piece 11 and the lower connecting piece 12. The diameter of the portion 14 is set, and the connecting bolts 18 are arranged at equal intervals along the edge of the disc portion 14 .

Further, a sealing gasket 16 is also provided between the upper connecting piece 11 and the lower connecting piece 12, and a through hole 19 corresponding to the connecting hole 17 is opened on the sealing gasket 16, and the connecting bolts 18 pass through the upper connecting piece in turn. The connecting hole 17 of the piece 11 and the through hole 19 of the sealing gasket 16 extend into the connecting hole 17 of the lower connecting piece 12, and the upper connecting piece 11, the sealing gasket 16 and the lower connecting piece 12 are connected and fixed. Specifically, in this design, the sealing gasket 16 is designed in a disc structure, and the diameter of the sealing gasket 16 is larger than the diameter of the upper connecting piece 11 and the lower connecting piece 12, so that the sealing gasket 16 partially extends to the upper connecting piece 11 and the lower connecting piece. The outer parts of both ends of the connecting piece 12 enable the sealing gasket 16 to be installed or taken out directly by clamping the part of the sealing gasket 16 extending to the outside, which is convenient for installation.

Further, the valve body 1 is also provided with a fixed bracket 20, the control device 2 is arranged on the fixed bracket 20, a fixed cavity 21 is formed in the fixed bracket 20, and a protective tube 22 is arranged in the fixed cavity 21, so that One end of the split output assembly 6 passes through the fixed cavity 21 and extends into the valve cavity 3 to connect with the valve plate 4 . Further, the protective tube includes an upper protective tube 23 and a lower protective tube 24, the two ends of the upper protective tube 23 are correspondingly connected to the split connector 8 and the top wall of the fixing cavity 21, and the two ends of the lower protective tube 24 are Correspondingly connect the split connector 8 and the bottom wall of the fixing cavity 21 . Specifically, this design sets the protective tube 22 at the position where the split output assembly 6 is located in the fixed cavity 21, so that the split output assembly 6 is sealed into the inside of the protective tube 22, and the split output assembly 6 is sealed and protected. .

Further, the transmission rod 9 and the connecting rod 10 are provided with corresponding sealing rings 25 at positions close to the openings of the corresponding connecting grooves 15 . Specifically, in this design, the diameters of the end of the transmission rod 9 extending into the connecting groove 15 of the upper connector 11 and the end of the connecting rod 10 extending into the notch of the lower connector 12 are smaller than the diameters of the corresponding transmission rod 9 and the connecting rod 10. The diameter of other parts is such that a corresponding ring groove 26 is formed between the connecting part 13 of the transmission rod 9 and the upper connecting part 11, and between the connecting part 13 of the connecting rod 10 and the lower connecting part 12, and the sealing ring 25 is arranged in the corresponding ring groove 26, so as to seal the position corresponding to the notch of the connecting groove 15, and prevent part of the outflowing medium from flowing out or flowing in from the notch of the connecting groove 15.

The connecting rod 10 has a connecting rod connecting structure 27 connected to the valve plate 4, the connecting rod connecting structure 27 includes a connecting block 28 and a movable pin 29, and the connecting block 28 is arranged at the bottom end of the connecting rod 10, so that A rotary hole 30 is set on the connecting block 28, and the movable pin shaft 29 is horizontally arranged in the rotary hole 30, and the two ends of the movable pin shaft 29 are movably connected with the valve plate 4, and two fixed blocks are arranged on the valve plate 31, the fixing block 31 is provided with an assembly groove 32 for the connecting block 28 to extend into, and the corresponding connecting hole 33 is provided on the fixed block 31. After the connecting block 28 is inserted into the assembly groove 32, the Both ends of the movable pin shaft 29 extend into the connection rotating hole 33 on the corresponding fixed block 31 and are connected with the valve plate 4 in rotation. Specifically, the connecting rod connection structure 27 is used to drive the valve plate 4 to open and close. After the power source 5 of the control device 2 is activated, the transmission rod 9 is driven to move up and down, and the transmission rod 9 drives the connecting rod 10 through the split connector 8. , and then the connecting rod 10 is connected with the fixed block 31 through the movable pin shaft 29, and the linear motion is changed into the rotation with the valve stem 34 as the axis through the movable pin shaft 09, so as to open and close the valve plate 4, so that the valve plate 4 can Quickly disengage from the valve seat.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A high-parameter large-diameter intelligent control check valve applied to nuclear power plants, including a valve body and a control device, a valve cavity is formed in the valve body, a valve plate is arranged in the valve cavity, and one end of the control device extends into the valve The cavity is connected with the valve plate, and it is characterized in that: the control device includes a power source and a split output assembly, and the split output assembly includes an output rod and a split connecting piece, and the split connecting piece separates the output rod into a transmission Rod and connecting rod, the two ends of the transmission rod are correspondingly connected to the power source and the split connecting piece, one end of the connecting rod is connected to the end of the split connecting piece away from the transmission rod, and the other end of the connecting rod extends into the valve The cavity is connected with the valve plate. 2. The high-parameter large-diameter intelligent control check valve applied to nuclear power plants according to claim 1, characterized in that: the split connecting piece includes an upper connecting piece and a lower connecting piece, and the upper connecting piece and the lower connecting piece The structure is the same, the upper connecting piece and the lower connecting piece both have a connecting part and a disc part, and a connecting groove is opened on the connecting part, and the transmission rod and the connecting rod extend into the corresponding connecting groove and connect with the upper connecting piece and the lower connecting piece. Connectors connect. 3. The high-parameter large-diameter intelligent control check valve applied to nuclear power plants according to claim 2, characterized in that: corresponding connection holes are provided on the disk parts of the upper connector and the lower connector, and the connection Connecting bolts are arranged in the holes, and the upper connecting piece and the lower connecting piece are connected and fixed by connecting bolts. 4. The high-parameter large-diameter intelligent control check valve applied to nuclear power plants according to claim 3, characterized in that: a sealing gasket is also provided between the upper connecting piece and the lower connecting piece, and a sealing gasket is set on the sealing gasket. Corresponding to the through hole of the connecting hole, the connecting bolt passes through the connecting hole of the upper connecting piece and the through hole of the sealing gasket in turn and extends into the connecting hole of the lower connecting piece, so as to connect and fix the upper connecting piece, the sealing gasket and the lower connecting piece . 5. The high-parameter large-diameter intelligent control check valve applied to nuclear power plants according to claim 1, characterized in that: the valve body is also provided with a fixed bracket, the control device is arranged on the fixed bracket, and the fixed bracket A fixed cavity is formed in the fixed cavity, and a protective tube is arranged in the fixed cavity. One end of the split output assembly extends into the valve cavity through the fixed cavity and connects with the valve plate. The split output component is located in the fixed cavity. . 6. The high-parameter and large-diameter intelligent control check valve applied to nuclear power plants according to claim 5, wherein the protective pipe includes an upper protective pipe and a lower protective pipe, and the two ends of the upper protective pipe are connected correspondingly. The body connecting piece and the top wall of the fixing chamber, and the two ends of the lower protective tube are correspondingly connected to the split connecting piece and the bottom wall of the fixing chamber. 7. The high-parameter large-diameter intelligent control check valve applied to nuclear power plants according to claim 6, characterized in that: the transmission rod and the connecting rod are provided with corresponding sealing rings near the notches of the corresponding connecting grooves. 8. The high-parameter large-diameter intelligent control check valve applied to nuclear power plants according to claim 1, characterized in that: the connecting rod has a connecting rod connecting structure connected to the valve plate, and the connecting rod connecting structure includes a connecting block and a movable pin shaft, the connecting block is arranged at the bottom end of the connecting rod, a rotary hole is arranged on the connecting block, the movable pin shaft is horizontally arranged in the rotary hole, and the two ends of the movable pin shaft are connected with the valve plate Department activity connection. 9. The high-parameter and large-diameter intelligent control check valve applied to nuclear power plants according to claim 8, characterized in that: two fixing blocks are arranged on the valve plate, and the fixing blocks are arranged between the connecting blocks to extend into The fixing block is provided with a corresponding connecting hole. After the connecting block is inserted into the fitting groove, the two ends of the movable pin shaft extend into the connecting hole on the corresponding fixing block to be rotatably connected with the valve plate connecting part.

Images