Side-mounted hard sealing fixed ball valve

Abstract

The utility model relates to the technical field of fixed ball valves, and discloses a side-mounted hard sealing fixed ball valve which comprises a body, an engine cover bolt is in threaded connection with the upper side of the body, a valve cover nut is in threaded connection with the top of the engine cover bolt, and an engine cover is fixedly connected with the top of the valve cover nut. The top of the engine cover is fixedly connected with a ball, the top end of the ball is fixedly connected with a grounding plunger, and the top end of the grounding plunger is fixedly connected with a grounding spring. According to the utility model, the engine cover bolt, the valve cover nut, the engine cover, the ball body, the valve seat retainer, the O-shaped ring I, the gasket I, the O-shaped ring II, the fireproof baffle filler, the seat follower, the seat spring and the like are matched with one another, so that whether the valve seat leaks and is damaged or not can be checked in advance, the pollution of medium replacement to the valve is reduced, and under the working pressure, the safety of the valve is improved. And when the valve is in a fully-opened or fully-closed state, the valve rod part stuffing box can be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of fixed ball valves, in particular to a side-mounted hard-sealed fixed ball valve. Background Art

[0002] Side mounted hard seal trunnion ball valve is a common valve type, usually used to control the flow of fluid. The side mounting of this ball valve means its structural feature, in which the ball is installed on the side of the pipe instead of the middle of the pipe to control the passage of the fluid. At the same time, the ball of the valve is fixed on the side of the pipe during installation. Through the special structural design, it occupies less space in the pipeline.

[0003] After searching, the Chinese patent announcement number: CN218543521U discloses a locking type hard-sealed fully welded ball valve, including a fully welded ball valve, pipes are placed on the left and right sides of the fully welded ball valve, the two pipes respectively penetrate and extend into the interior of the fully welded ball valve, two rubber rings are fixedly connected to the fully welded ball valve, the two pipes respectively penetrate the two rubber rings, two support rings are fixedly mounted on the outer peripheral wall of the fully welded ball valve, and the outer peripheral walls of the two pipes are both mounted with fixing rings. The locking-type hard-sealed fully welded ball valve seals the connection between the pipeline and the fully welded ball valve through the action of the rubber ring, thereby improving the sealing performance of the fully welded ball valve. The fully welded ball valve and the pipeline are fixed by the fit between the fixed plate and the support ring, thereby facilitating the operation of the staff. At the same time, the fixed plate is supported by the action of the first spring and the second spring, thereby improving the stability of the fixed plate. Although the above introduction realizes the sealing of the ball valve, the above structure does not take into account the cleaning of the inside of the ball valve, thereby causing debris to enter the ball valve and damage the ball valve, thereby reducing the service life of the fixed ball valve. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a side-mounted hard-seal fixed ball valve, aiming to improve the problem in the prior art that the inside of the ball valve is not cleaned, thereby causing debris to enter the ball valve and damage the ball valve, thereby reducing the service life of the fixed ball valve.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a side-mounted hard-sealed fixed ball valve, comprising a body, the upper side of the body is threadedly connected with a hood bolt, the top of the hood bolt is threadedly connected with a valve cover nut, the top of the valve cover nut is fixedly connected with the hood, the top of the hood is fixedly connected with a sphere, the top of the sphere is fixedly connected with a grounding plunger, the top of the grounding plunger is fixedly connected with a grounding spring, the top of the grounding spring is fixedly connected with a bearing 1, the top of the bearing 1 is fixedly connected with a thrust washer, the top surface of the thrust washer is provided with a valve stem, the top surface of the valve stem is provided with a gland box, the top of the gland box is provided with an O-ring 3, the top of the O-ring 3 is fixedly connected with a nameplate, the top surface of the nameplate is threadedly connected with a rivet, the top of the rivet is fixedly connected with a washer 2, the top of the washer 2 is threadedly connected with a screw 1, the top of the screw 1 is provided with a pin 1, and the top of the pin 1 is provided with a gear.

[0006] As a further description of the above technical solution:

[0007] A button is provided on the right side of the gear, a pin 2 is provided at the bottom of the button, a screw 2 is threadedly connected to the bottom of the pin 2, a top flange is provided at the bottom of the screw 2, a gasket 3 is provided at the bottom end of the top flange, an O-ring 4 is provided at the bottom of the gasket 3, and a latch 1 is provided at the bottom end of the O-ring 4.

[0008] As a further description of the above technical solution:

[0009] A valve seat retainer is arranged on the left side of the sphere, an O-ring 1 is arranged on the left side of the valve seat retainer, a latch 2 is arranged on the right side of the body, a gasket 4 is arranged on the right side of the latch 2, an O-ring 5 is arranged on the right side of the gasket 4, a drain is arranged on the right side of the O-ring 5, a fixed shaft is arranged on the right side of the drain, a bearing 2 is arranged on the right side of the fixed shaft, and a gasket 5 is arranged on the right side of the bearing 2.

[0010] As a further description of the above technical solution:

[0011] An injection valve 1 is arranged on the left side of the latch 1, and a nut is arranged on the right side of the latch 1.

[0012] As a further description of the above technical solution:

[0013] A gasket one is arranged on the left side of the O-ring one, and an O-ring two is arranged on the left side of the gasket one.

[0014] As a further description of the above technical solution:

[0015] A fireproof baffle filler is arranged on the left side of the O-ring 2, and a seat follower is arranged on the left side of the fireproof baffle filler.

[0016] As a further description of the above technical solution:

[0017] A seat spring is arranged on the left side of the seat follower.

[0018] As a further description of the above technical solution:

[0019] An exhaust valve is arranged on the left side of the seat spring, and an injection valve 2 is arranged on the left side of the exhaust valve.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the engine hood bolts, valve cover nuts, engine hood, ball, valve seat retainer, O-ring 1, gasket 1, O-ring 2, fire baffle filler, seat follower and seat spring cooperate with each other, so that the valve seat can be checked in advance for leakage damage, and the contamination of the valve by medium replacement can be reduced. Under working pressure, when the valve is in a fully open or fully closed state, the valve stem stuffing box can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front side sectional view of the side mounted hard seal fixed ball valve proposed by the utility model;

[0023] Figure 2 for Figure 1 A magnified image;

[0024] Figure 3 This is a structural diagram of the exhaust valve of the side-mounted hard-seal fixed ball valve proposed by the utility model.

[0025] Legend:

[0026] 1. Body; 2. Hood bolts; 3. Bonnet nuts; 4. Hood; 5. Ball; 7. Seat retainer; 8. O-ring one; 9. Washer one; 10. O-ring two; 11. Fire damper packing; 12. Seat follower; 13. Seat spring; 14. Grounding spring; 15. Grounding plunger; 16. Bearing one; 17. Thrust washer; 18. Stem; 19. Gland box; 20. O-ring three; 21. Rivet; 22. Nameplate; 23. Washer 2; 24. Screw 1; 25. Pin 1; 26. Gear; 27. Pin 2; 28. Button; 29. ​​Screw 2; 30. Top flange; 31. Washer 3; 32. O-ring 4; 33. Latch 1; 34. Nut; 35. Injection valve 1; 36. Washer 5; 37. Bearing 2; 38. Fixed shaft; 39. Drain; 40. O-ring 5; 41. Washer 4; 42. Latch 2; 43. Exhaust valve; 44. Injection valve 2. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Please see attached Figure 1 The utility model provides an embodiment: a side-mounted hard-seal fixed ball valve, comprising a body 1, the upper side of the body 1 is threadedly connected with a hood bolt 2, the top of the hood bolt 2 is threadedly connected with a valve cover nut 3, the top of the valve cover nut 3 is fixedly connected with a hood 4, the top of the hood 4 is fixedly connected with a ball 5, the top of the sphere 5 is fixedly connected with a grounding plunger 15, the top of the grounding plunger 15 is fixedly connected with a grounding spring 14, the top of the grounding spring 14 is fixedly connected with a bearing 16, the bearing 1 The top of valve 6 is fixedly connected with a thrust washer 17, the top surface of the thrust washer 17 is provided with a valve stem 18, the top surface of the valve stem 18 is provided with a gland box 19, the top of the gland box 19 is provided with an O-ring 3 20, the top of the O-ring 3 20 is fixedly connected with a name plate 22, the top surface of the name plate 22 is threadedly connected with a rivet 21, the top of the rivet 21 is fixedly connected with a washer 23, the top of the washer 23 is threadedly connected with a screw 1 24, the top of the screw 1 24 is provided with a pin 1 25, and the top of the pin 1 25 is provided with a gear 26;

[0029] Specifically, the single seal generally has the function of automatic pressure relief, and the double seal is a safety pressure relief attached to the valve body. After the valve seat of the single seal structure is embedded in the support ring, the preload force of the spring and the piston effect make the valve seat and the ball 5 pressed and sealed. When the middle cavity of the valve body is abnormally pressurized for some reason, the valve seat automatically releases pressure under the action of the pressure difference to prevent danger.

[0030] Please see attached Figure 1 A button 28 is provided on the right side of the gear 26, a pin 27 is provided at the bottom of the button 28, a screw 29 is threadedly connected to the bottom of the pin 27, a top flange 30 is provided at the bottom of the screw 29, a gasket 31 is provided at the bottom end of the top flange 30, an O-ring 4 32 is provided at the bottom of the gasket 31, a latch 1 33 is provided at the bottom end of the O-ring 4 32, an injection valve 1 35 is provided on the left side of the latch 1 33, and a nut 34 is provided on the right side of the latch 1 33;

[0031] Specifically, the valve seat automatically resets after pressure relief. The valve seat support and the O-ring support form a double sealing structure. The spring preload force makes the valve seat contact the ball 5 and seals under the pressure difference between the upstream side of the pipeline and the middle cavity of the valve body.

[0032] Please see attached Figure 2- Attachment Figure 3 A valve seat retainer 7 is provided on the left side of the ball 5, an O-ring 1 8 is provided on the left side of the valve seat retainer 7, a latch 2 42 is provided on the right side of the body 1, a gasket 41 is provided on the right side of the latch 2 42, an O-ring 5 40 is provided on the right side of the gasket 41, a drain 39 is provided on the right side of the O-ring 5 40, a fixed shaft 38 is provided on the right side of the drain 39, a bearing 2 37 is provided on the right side of the fixed shaft 38, a gasket 5 36 is provided on the right side of the bearing 2 37, an exhaust valve 43 is provided on the left side of the seat spring 13, and an injection valve 2 44 is provided on the left side of the exhaust valve 43;

[0033] Specifically, no matter which side has a higher medium pressure, the preload force of the spring and the piston effect make the valve seats on the upstream and downstream sides always in close contact with the ball 5 and completely block the fluid. Even if any valve seat is damaged, leakage can be prevented. However, there is no automatic pressure relief function. A pressure relief device must be installed in the middle cavity of the valve body to prevent abnormal pressure increase in the middle cavity of the valve body.

[0034] Please see attached Figure 1 -2, a gasket 19 is arranged on the left side of the O-ring 18, an O-ring 2 10 is arranged on the left side of the gasket 19, a fire baffle filler 11 is arranged on the left side of the O-ring 2 10, a seat follower 12 is arranged on the left side of the fire baffle filler 11, and a seat spring 13 is arranged on the left side of the seat follower 12;

[0035] Specifically, the relative sliding part of the large-caliber ball valve adopts Teflon with a small static friction coefficient, so the operating torque is small. Even without lubrication, it can operate flexibly for a long time.

[0036] Working principle: When the valve is in the closed state, the valve seats on the upstream and downstream sides block the fluid, and the stagnation in the middle cavity of the valve body can be discharged. The chip removal device has the following functions. When the medium stagnant in the middle cavity of the valve increases due to temperature and abnormal pressure rises, the valve seat separates from the ball 5 to automatically release the pressure or the safety valve installed on the valve body ensures system safety. The unique sealing method of the ball valve completely blocks the fluid. The valve seat adopts a hard sealing structure to effectively prevent the soft valve seat from softening and burning due to fire or abnormal temperature rise. In order to prevent the expansion of the fire, the valve operation is still reliable. At the same time, the valve seat support can contact the ball 5 to play an instantaneous sealing role, which complies with the provisions of API607. When the valve is operated, electrostatic charge will be generated due to the friction between the ball 5 and the valve seat. Due to the hard sealing structure design, the ball 5, the valve seat and the valve body form a circuit path through the spring and the hard sealing material to conduct the current inside the valve. When the valve seat and the valve stem 18 seal are damaged and cause leakage, the sealing grease injected through the grease injection valve can play an instantaneous sealing role. There are two types of valve seat structures: single seal and double seal.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A side mounted hard seal trunnion ball valve, comprising a body (1), characterized in that: The upper side of the body (1) is threadedly connected to a hood bolt (2), the top of the hood bolt (2) is threadedly connected to a valve cover nut (3), the top of the valve cover nut (3) is fixedly connected to a hood (4), the top of the hood (4) is fixedly connected to a sphere (5), the top of the sphere (5) is fixedly connected to a grounding plunger (15), the top of the grounding plunger (15) is fixedly connected to a grounding spring (14), the top of the grounding spring (14) is fixedly connected to a bearing 1 (16), the top of the bearing 1 (16) is fixedly connected to a thrust washer (17), the stop The top surface of the push washer (17) is provided with a valve stem (18), the top surface of the valve stem (18) is provided with a pressure cover box (19), the top of the pressure cover box (19) is provided with an O-ring three (20), the top of the O-ring three (20) is fixedly connected to a name plate (22), the top surface of the name plate (22) is threadedly connected to a rivet (21), the top of the rivet (21) is fixedly connected to a washer two (23), the top of the washer two (23) is threadedly connected to a screw one (24), the top of the screw one (24) is provided with a pin one (25), and the top of the pin one (25) is provided with a gear (26).

2. The side-mounted hard-seal trunnion ball valve according to claim 1 is characterized in that: A button (28) is provided on the right side of the gear (26), a pin 2 (27) is provided at the bottom of the button (28), a screw 2 (29) is threadedly connected to the bottom of the pin 2 (27), a top flange (30) is provided at the bottom of the screw 2 (29), a gasket 3 (31) is provided at the bottom end of the top flange (30), an O-ring 4 (32) is provided at the bottom of the gasket 3 (31), and a latch 1 (33) is provided at the bottom end of the O-ring 4 (32).

3. The side-mounted hard-seal trunnion ball valve according to claim 2 is characterized in that: A valve seat retainer (7) is arranged on the left side of the sphere (5), an O-ring 1 (8) is arranged on the left side of the valve seat retainer (7), a latch 2 (42) is arranged on the right side of the body (1), a gasket 4 (41) is arranged on the right side of the latch 2 (42), an O-ring 5 (40) is arranged on the right side of the gasket 4 (41), a drain (39) is arranged on the right side of the O-ring 5 (40), a fixed shaft (38) is arranged on the right side of the drain (39), a bearing 2 (37) is arranged on the right side of the fixed shaft (38), and a gasket 5 (36) is arranged on the right side of the bearing 2 (37).

4. The side-mounted hard-seal trunnion ball valve according to claim 2, characterized in that: An injection valve (35) is arranged on the left side of the latch (33), and a nut (34) is arranged on the right side of the latch (33).

5. The side-mounted hard-seal trunnion ball valve according to claim 3 is characterized in that: A gasket one (9) is arranged on the left side of the O-ring one (8), and an O-ring two (10) is arranged on the left side of the gasket one (9).

6. The side-mounted hard-seal trunnion ball valve according to claim 5, characterized in that: A fireproof baffle filler (11) is arranged on the left side of the O-ring 2 (10), and a seat follower (12) is arranged on the left side of the fireproof baffle filler (11).

7. The side-mounted hard-seal trunnion ball valve according to claim 6, characterized in that: A seat spring (13) is arranged on the left side of the seat follower (12).

8. The side-mounted hard-seal trunnion ball valve according to claim 7, characterized in that: An exhaust valve (43) is arranged on the left side of the seat spring (13), and an injection valve 2 (44) is arranged on the left side of the exhaust valve (43).

Images