A special tool for disassembling and assembling 361 valve

Abstract

The present invention relates to a special tool for disassembling and assembling a 361 valve, comprising a pressure sealing wrench, a valve cage removal disk and a valve seat nut wrench assembly, wherein a circular hole is provided in the middle of the pressure sealing wrench, and a first protrusion is provided in a circumferential manner on the edge of the circular hole, and the valve seat nut wrench assembly comprises a valve seat connecting rod, a fixed disk and a wrench pull rod, wherein a fixed disk is sleeved on the valve seat connecting rod, and a valve body bolt is inserted on the fixed disk, and the bottom end of the valve body bolt passes through the fixed disk and is threadedly connected to the top threaded hole of the valve body. The present invention adopts a split design of a pressure sealing wrench, a valve cage removal disk and a valve seat nut wrench assembly, which is convenient for carrying and storage, and can be targeted and gradually disassembled and assembled for each component of the 361 valve, and the disassembly and assembly is simple and will not cause damage to the components during the disassembly and assembly process, and at the same time effectively improves the disassembly and assembly efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of valve disassembly and assembly, and in particular relates to a special tool for disassembly and assembly of a 361 valve. Background Art

[0002] The 361 valve is one of the important components of a thermal power plant. Its function is to adjust the water level of the boiler start-up separator water tank to ensure safe operation during the start-up and shutdown process of the unit. The 361 valve is in a normally closed state during the operation of the unit. It is a high-pressure regulating valve. Due to the high-pressure medium, the valve is prone to internal leakage, so the valve needs to be disassembled and repaired regularly to solve the internal leakage problem. However, this type of valve is large in size, and the valve components are large in size and weight. The valve seat is located at the bottom of the valve body, and the valve seat nut is pressed and locked by the valve body through the thread. The valve cage is also pressed and locked by the pressure sealing nut that is threaded and matched with the valve body. The pressure sealing nut and the pressure sealing gland are provided with flower grooves. The general tools are used to disassemble and assemble them, which is easy to cause damage to the components. At the same time, the valve seat and the valve seat nut are located at the bottom of the valve body with a large depth, and personnel cannot use general tools to disassemble and assemble them. In view of the above problems, the present invention provides a special tool for disassembling and assembling a 361 valve. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a special tool for disassembling and assembling a 361 valve, which is easy to disassemble and assemble without damaging the 361 valve, adopts a split design for easy carrying and storage, and can improve the disassembly and assembly efficiency.

[0004] The technical solution adopted by the present invention is: a special tool for disassembling and assembling a 361 valve, comprising a pressure sealing wrench, a valve cage removal disk and a valve seat nut wrench assembly, a circular hole is opened in the middle of the pressure sealing wrench, a first protrusion is circumferentially arranged on the edge of the circular hole, the first protrusion is meshed with the first groove at the top of the pressure sealing nut, two symmetrical first through holes and two symmetrical screw holes are opened at both ends of the pressure sealing wrench, the bottom end of the screw hole is in contact with the top surface of the valve body, the first through hole is located on the outside of the screw hole and does not contact the top surface of the valve body, the screw hole is used to install a top screw, the valve cage removal disk is located at the top of the pressure sealing wrench, the surface of the valve cage removal disk is opened with a second through hole, and the inside of the second through hole A valve cage bolt is inserted, and the bottom end of the valve cage bolt passes through the second through hole and the circular hole in sequence and is threadedly connected to the threaded hole on the top of the valve cage. The valve seat nut wrench assembly includes a valve seat connecting rod, a fixed disk and a wrench rod. The bottom end of the valve seat connecting rod is inserted from the top of the valve body and meshes with the second groove at the top of the valve seat nut. A fixed disk is sleeved on the valve seat connecting rod, and a valve body bolt is inserted on the fixed disk. The bottom end of the valve body bolt is threadedly connected to the top threaded hole of the valve body through the fixed disk. The top of the valve seat connecting rod is polygonal, and a polygonal hole corresponding to the top of the valve seat connecting rod is opened in the middle of the wrench rod. The wrench rod is sleeved at the top of the valve seat connecting rod, and symmetrical third through holes are opened at both ends of the wrench rod.

[0005] Preferably, the pressure sealing wrench is an integrated design with a circular middle portion and rectangular ends, the center of the circular hole coincides with the center of the middle portion, and the screw hole and the first through hole are both located on the rectangular portion.

[0006] Preferably, four first protrusions are provided and are evenly distributed around the edge of the circular hole.

[0007] Preferably, four second through holes are provided and are evenly distributed on the surface of the cage removal plate in a circumferential manner.

[0008] Preferably, the valve seat connecting rod includes a valve stem and an operating head, the bottom end of the valve stem is fixedly connected to the top end of the operating head, and the bottom edge of the operating head is provided with four downward-facing second protrusions, which are evenly distributed in a circle at the bottom end of the operating head and engage with the second groove at the top end of the valve seat nut.

[0009] Preferably, the top end of the valve seat connecting rod is hexagonal, and the polygonal hole in the middle of the wrench rod is a hexagonal hole matching the top end of the valve seat connecting rod.

[0010] Beneficial effects of the present invention: The present invention adopts a split design of the pressure sealing wrench, the valve cage removal plate and the valve seat nut wrench assembly, which is easy to carry and store, and can disassemble and assemble the various components of the 361 valve step by step in a targeted manner. The disassembly and assembly is simple and will not be damaged during the disassembly and assembly process, while effectively improving the disassembly and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the pressure sealing wrench of the present invention in use;

[0012] Figure 2 This is a schematic diagram of the operation structure for removing the valve cage;

[0013] Figure 3 This is a schematic diagram of the structure of the valve seat bolt wrench assembly of the present invention in use;

[0014] Figure 4 It is a schematic diagram of the top view of the pressure sealing wrench of the present invention;

[0015] Figure 5 for Figure 4 Schematic diagram of the structure of the AA section;

[0016] Figure 6 It is a schematic diagram of the top view of the structure of the valve cage disassembly plate of the present invention;

[0017] Figure 7 It is a structural schematic diagram of the valve seat connecting rod of the present invention;

[0018] Figure 8 It is a bottom view structural schematic diagram of the valve seat connecting rod of the present invention;

[0019] Fig. 9 It is a schematic diagram of the top view of the pressure sealing nut of the present invention;

[0020] Fig.10 It is a schematic diagram of the top view of the valve seat nut of the present invention.

[0021] In the figure: 1, pressure sealing wrench 2, valve cage removal plate 3, round hole 4, first protrusion 5, pressure sealing nut 6, first groove 7, first through hole 8, screw hole 9, valve body 10, top screw 11, second through hole 12, valve cage bolt 13, valve seat connecting rod 131, valve stem 132, operating head 133, second protrusion 14, fixing plate 15, wrench rod 16, valve seat nut 17, second groove 18, valve body bolt 19, polygonal hole 20, third through hole 21, valve cage 22, valve seat. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention, and are specifically described in combination with the embodiments below.

[0023] Example 1

[0024] A special tool for disassembling and assembling a 361 valve comprises a pressure sealing wrench 1, a cage removal plate 2 and a valve seat nut wrench assembly, wherein a circular hole 3 is provided in the middle of the pressure sealing wrench 1, a first protrusion 4 is provided on the edge of the circular hole 3 in a circumferential manner, and the first protrusion 4 is meshed with a first groove 6 at the top of a pressure sealing nut 5. The schematic diagram of the structure of the pressure sealing nut 5 from a top view is shown in FIG. Fig. 9 As shown, two symmetrical first through holes 7 and two symmetrical screw holes 8 are provided at both ends of the pressure sealing wrench 1, the bottom ends of the screw holes 8 are in contact with the top end surface of the valve body 9, the first through hole 7 is located outside the screw hole 8 and does not contact with the top end surface of the valve body 9, the screw hole 8 is used to install the top screw 10, the valve cage removal plate 2 is located at the top of the pressure sealing wrench 1, the surface of the valve cage removal plate 2 is provided with a second through hole 11, the second through hole 11 is inserted with a valve cage bolt 12, the bottom ends of the valve cage bolt 12 pass through the second through hole 11 and the circular hole 3 in sequence and are threadedly connected to the threaded hole on the top of the valve cage 21, and the valve seat nut wrench assembly includes a valve seat connecting rod 13. , a fixed disk 14 and a wrench rod 15, the bottom end of the valve seat connecting rod 13 is inserted from the top of the valve body 9 and meshed with the second groove 17 at the top of the valve seat nut 16, the valve seat connecting rod 13 is sleeved with the fixed disk 14, and the valve body bolt 18 is inserted on the fixed disk 14, and the bottom end of the valve body bolt 18 passes through the fixed disk 14 and is threadedly connected to the top threaded hole of the valve body 9, the top of the valve seat connecting rod 13 is polygonal, and a polygonal hole 19 corresponding to the top of the valve seat connecting rod 13 is opened in the middle of the wrench rod 15, the wrench rod 15 is sleeved at the top of the valve seat connecting rod 13, and symmetrical third through holes 20 are opened at both ends of the wrench rod 15.

[0025] When in use, first disassemble the pressure sealing nut 5. Figure 1 As shown, the first protrusion 4 on the pressure sealing wrench 1 is engaged with the first groove 6 at the top of the pressure sealing nut 5 and then placed on the top of the valve body 9, the valve cage removal plate 2 is placed on the pressure sealing wrench 1, and the valve cage bolt 12 is passed through the second through hole 11 and the round hole 3 in sequence and then screwed into the valve cage 21, and a hand winch is hung in the two first through holes 7 and force is applied to drive the pressure sealing wrench 1 to rotate, thereby driving the rotation of the pressure sealing nut 5, and the pressure sealing nut 5 is loosened and taken out, and then the valve cage 21 is taken out, as shown in FIG. Figure 2As shown, the pressure sealing wrench 1 is similarly placed on the valve body 9, the cage removal plate 2 is placed on the pressure sealing wrench 1 and locked and fixed with the cage 21 through the cage bolts 12, the top screw 10 is screwed into the screw hole 8 on the pressure sealing wrench 1, and the two top screws 10 are tightened at the same time, so that the cage 21 is lifted up and taken out along with the pressure sealing wrench 1 and the cage removal plate 2, and finally the valve seat nut 16 and the valve seat 22 are disassembled, as shown in FIG. Figure 3 As shown, first, the second protrusion 133 on the operating head 132 of the valve seat connecting rod 13 is meshed with the second groove 17 on the valve seat nut 16, and then the fixing plate 14 is passed through the top of the valve stem 131 and fixed to the valve body 9 by the valve body 9 bolts. The polygonal hole 19 in the middle of the wrench rod 15 is stuck at the top of the valve stem 131. By pulling the hand winch hung on the third through holes 20 on both sides of the wrench rod 15, the wrench rod 15 and the valve seat connecting rod 13 are driven to rotate, and then the valve seat nut 16 is driven to rotate, so as to realize the disassembly of the valve seat nut 16, and then the valve seat 22 can be directly taken out.

[0026] During installation, first place the valve seat 22 and the valve seat nut 16 in the valve body 9 in sequence, install the valve seat nut wrench assembly, and then use the hand chain hoist in reverse to lock the valve seat nut 16 to fix the valve seat 22, then place the valve cage 21 in the valve body 9, and place the pressure sealing nut 5 above the installation working position. Finally, assemble the pressure sealing wrench 1 and use the hand chain hoist in reverse to tighten the pressure sealing nut 5, thus completing the installation of the 361 valve.

[0027] Example 2

[0028] like Figure 1-3 As shown, a special tool for disassembling and assembling a 361 valve includes a pressure sealing wrench 1, a cage removal plate 2 and a valve seat nut wrench assembly. A circular hole 3 is opened in the middle of the pressure sealing wrench 1. A first protrusion 4 is circumferentially arranged on the edge of the circular hole 3. The first protrusion 4 is meshed with a first groove 6 at the top of a pressure sealing nut 5. The schematic diagram of the top view of the pressure sealing nut 5 is shown in FIG. Fig. 9As shown, two symmetrical first through holes 7 and two symmetrical screw holes 8 are provided at both ends of the pressure sealing wrench 1, the bottom ends of the screw holes 8 are in contact with the top end surface of the valve body 9, the first through hole 7 is located outside the screw hole 8 and does not contact with the top end surface of the valve body 9, the screw hole 8 is used to install the top screw 10, the valve cage removal plate 2 is located at the top of the pressure sealing wrench 1, the surface of the valve cage removal plate 2 is provided with a second through hole 11, the second through hole 11 is inserted with a valve cage bolt 12, the bottom ends of the valve cage bolt 12 pass through the second through hole 11 and the circular hole 3 in sequence and are threadedly connected to the threaded hole on the top of the valve cage 21, and the valve seat nut wrench assembly includes a valve seat connecting rod 13. , a fixed disk 14 and a wrench rod 15, the bottom end of the valve seat connecting rod 13 is inserted from the top of the valve body 9 and meshed with the second groove 17 at the top of the valve seat nut 16, the valve seat connecting rod 13 is sleeved with the fixed disk 14, and the valve body bolt 18 is inserted on the fixed disk 14, and the bottom end of the valve body bolt 18 passes through the fixed disk 14 and is threadedly connected to the top threaded hole of the valve body 9, the top of the valve seat connecting rod 13 is polygonal, and a polygonal hole 19 corresponding to the top of the valve seat connecting rod 13 is opened in the middle of the wrench rod 15, the wrench rod 15 is sleeved at the top of the valve seat connecting rod 13, and symmetrical third through holes 20 are opened at both ends of the wrench rod 15.

[0029] like Figure 4-5 As shown, the pressure sealing wrench 1 is an integrated design with a circular middle portion and rectangular ends. The center of the circular hole 3 coincides with the center of the middle portion, and the screw hole 8 and the first through hole 7 are both located on the rectangular portion, which facilitates the pressure sealing wrench 1 to be rotated and pulled up.

[0030] There are four first protrusions 4 evenly distributed on the edge of the circular hole 3 . The four first protrusions 4 are engaged with the four first grooves 6 , so as to drive the pressure sealing nut 5 to rotate and then remove the pressure sealing nut 5 .

[0031] like Figure 6 As shown, four second through holes 11 are arranged and evenly distributed on the surface of the cage removal plate 2 in a circumferential manner, and four cage bolts 12 can be installed around the second through holes 11 to facilitate the removal of the cage 21 .

[0032] like Figure 7-8 As shown, the valve seat connecting rod 13 includes a valve stem 131 and an operating head 132. The bottom end of the valve stem 131 is fixedly connected to the top end of the operating head 132. The bottom edge of the operating head 132 is provided with four downward second protrusions 133, which are evenly distributed on the bottom end of the operating head 132 in a circumferential manner and mesh with the second groove 17 at the top end of the valve seat nut 16, so as to easily drive the rotation of the valve seat nut 16 and then remove the valve seat nut 16. The schematic diagram of the top view of the valve seat nut 16 is shown in FIG. Fig.10 shown.

[0033] The top end of the valve seat connecting rod 13 is hexagonal, and the polygonal hole 19 in the middle of the wrench rod 15 is a hexagonal hole matching the top end of the valve seat connecting rod 13. The wrench rod 15 is stuck on the top end of the valve seat connecting rod 13, and when it rotates, it drives the valve seat connecting rod 13 and the valve seat nut 16 to rotate, thereby realizing the disassembly of the valve seat nut 16.

[0034] When in use, first disassemble the pressure sealing nut 5. Figure 1 As shown, the first protrusion 4 on the pressure sealing wrench 1 is engaged with the first groove 6 at the top of the pressure sealing nut 5 and then placed on the top of the valve body 9, the valve cage removal plate 2 is placed on the pressure sealing wrench 1, and the valve cage bolt 12 is passed through the second through hole 11 and the round hole 3 in sequence and then screwed into the valve cage 21, and a hand winch is hung in the two first through holes 7 and force is applied to drive the pressure sealing wrench 1 to rotate, thereby driving the rotation of the pressure sealing nut 5, and the pressure sealing nut 5 is loosened and taken out, and then the valve cage 21 is taken out, as shown in FIG. Figure 2 As shown, the pressure sealing wrench 1 is similarly placed on the valve body 9, the cage removal plate 2 is placed on the pressure sealing wrench 1 and locked and fixed with the cage 21 through the cage bolts 12, the top screw 10 is screwed into the screw hole 8 on the pressure sealing wrench 1, and the two top screws 10 are tightened at the same time, so that the cage 21 is lifted up and taken out along with the pressure sealing wrench 1 and the cage removal plate 2, and finally the valve seat nut 16 and the valve seat 22 are disassembled, as shown in FIG. Figure 3 As shown, first, the second protrusion 133 on the operating head 132 of the valve seat connecting rod 13 is meshed with the second groove 17 on the valve seat nut 16, and then the fixing plate 14 is passed through the top of the valve stem 131 and fixed to the valve body 9 by the valve body 9 bolts. The polygonal hole 19 in the middle of the wrench rod 15 is stuck at the top of the valve stem 131. By pulling the hand winch hung on the third through holes 20 on both sides of the wrench rod 15, the wrench rod 15 and the valve seat connecting rod 13 are driven to rotate, and then the valve seat nut 16 is driven to rotate, so as to realize the disassembly of the valve seat nut 16, and then the valve seat 22 can be directly taken out.

[0035] During installation, first place the valve seat 22 and the valve seat nut 16 in the valve body 9 in sequence, install the valve seat nut wrench assembly, and then use the hand chain hoist in reverse to lock the valve seat nut 16 to fix the valve seat 22, then place the valve cage 21 in the valve body 9, and place the pressure sealing nut 5 above the installation working position. Finally, assemble the pressure sealing wrench 1 and use the hand chain hoist in reverse to tighten the pressure sealing nut 5, thus completing the installation of the 361 valve.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and scope of the elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A special tool for disassembling and assembling 361 valves, Features: The invention comprises a pressure sealing wrench, a valve cage removal disk and a valve seat nut wrench assembly, wherein a circular hole is provided in the middle of the pressure sealing wrench, and a first protrusion is circumferentially provided on the edge of the circular hole, and the first protrusion meshes with the first groove at the top end of the pressure sealing nut. Two symmetrical first through holes and two symmetrical screw holes are provided at both ends of the pressure sealing wrench, and the bottom ends of the screw holes are in contact with the top end surface of the valve body, and the first through holes are located outside the screw holes and do not contact the top end surface of the valve body. The screw holes are used to install top screws, and the valve cage removal disk is located at the top of the pressure sealing wrench, and a second through hole is provided on the surface of the valve cage removal disk, and a valve cage bolt is inserted in the second through hole. The bottom end of the bolt passes through the second through hole and the circular hole in sequence and is threadedly connected to the threaded hole on the top of the valve cage. The valve seat nut wrench assembly includes a valve seat connecting rod, a fixed disk and a wrench pull rod. The bottom end of the valve seat connecting rod is inserted from the top of the valve body and meshed with the second groove on the top of the valve seat nut. The valve seat connecting rod is sleeved with a fixed disk, and a valve body bolt is inserted on the fixed disk. The bottom end of the valve body bolt is threadedly connected to the top threaded hole of the valve body through the fixed disk. The top of the valve seat connecting rod is polygonal, and a polygonal hole corresponding to the top of the valve seat connecting rod is opened in the middle of the wrench pull rod. The wrench pull rod is sleeved at the top of the valve seat connecting rod, and symmetrical third through holes are opened at both ends of the wrench pull rod. The pressure sealing wrench is an integrated design with a circular middle portion and rectangular ends, the center of the circular hole coincides with the center of the middle portion, and the screw hole and the first through hole are both located on the rectangular portion; There are four first protrusions, which are evenly distributed around the edge of the circular hole.

2. The special tool for disassembling and assembling the 361 valve according to claim 1, Features: The number of the second through holes is four and they are evenly distributed on the surface of the cage removal plate in a circumferential manner.

3. The special tool for disassembling and assembling the 361 valve according to claim 1, Features: The valve seat connecting rod includes a valve stem and an operating head. The bottom end of the valve stem is fixedly connected to the top end of the operating head. The bottom edge of the operating head is provided with four downward-facing second protrusions, which are evenly distributed in a circle at the bottom end of the operating head and mesh with the second groove at the top end of the valve seat nut.

4. The special tool for disassembling and assembling the 361 valve according to claim 1, Features: The top end of the valve seat connecting rod is hexagonal, and the polygonal hole in the middle of the wrench pull rod is a hexagonal hole matching the top end of the valve seat connecting rod.

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