CN108119688B - Hard sealing fixed ball valve for severe coal gasification working condition - Google Patents
Hard sealing fixed ball valve for severe coal gasification working condition Download PDFInfo
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- CN108119688B CN108119688B CN201711432881.4A CN201711432881A CN108119688B CN 108119688 B CN108119688 B CN 108119688B CN 201711432881 A CN201711432881 A CN 201711432881A CN 108119688 B CN108119688 B CN 108119688B
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- gasket
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- 238000007789 sealing Methods 0.000 title claims abstract description 35
- 239000003245 coal Substances 0.000 title claims abstract description 25
- 238000002309 gasification Methods 0.000 title claims abstract description 22
- 238000003825 pressing Methods 0.000 claims description 47
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 27
- 238000012856 packing Methods 0.000 claims description 22
- 229910002804 graphite Inorganic materials 0.000 claims description 19
- 239000010439 graphite Substances 0.000 claims description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims 2
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 4
- 230000009466 transformation Effects 0.000 description 3
- 239000010866 blackwater Substances 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/061—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor knee-joint
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a hard sealing fixed ball valve with severe coal gasification working conditions, which comprises a valve body, a first valve cover, a second valve cover, a valve rod, a ball body, a first valve seat, a second valve seat, a first bearing, a second bearing and a stuffing box, wherein the ball body is arranged between the first valve seat and the second valve seat, the ball body is matched with the first valve seat and the second valve seat in a sealing pair mode, the first valve seat and the second valve seat are respectively arranged at the rear parts of the first valve seat and the second valve seat, the first bearing and the second bearing are respectively arranged in the first valve cover and the second valve cover, and slotted holes are respectively arranged on the end faces adjacent to the first valve seat and the second valve seat. The hard sealing fixed ball valve with severe coal gasification working conditions can simultaneously meet the requirements of wear resistance, corrosion resistance, high-frequency action and low leakage and dissipation emission.
Description
Technical Field
The invention relates to a valve, in particular to a hard sealing fixed ball valve under severe coal gasification working conditions.
Background
In an automatic production process regulating system, a regulating valve is an important and indispensable link, and is called as a "hand and foot" for automatic production process, and is one of terminal control elements of an automatic control system. Ball valves are one of the fastest growing valves in recent years due to their simple structure, good sealing performance and strong circulation capacity. The opening and closing part of the ball valve is a sphere, the ball valve is mainly used for cutting off, distributing and changing the flow direction of a medium in a pipeline, and the purpose of opening and closing is realized by rotating the sphere by 90 degrees around the axis of the valve rod.
The ball valve is widely applied, is suitable for common working mediums such as water, natural gas and the like, and can also be suitable for severe petrochemical and coal chemical working conditions under severe working conditions. However, in media such as coal gasification black water, slurry, coal cinder, etc., a large amount of solid wear-resistant particles are accompanied, and the existing metal hard sealing valve is difficult to meet the requirements of emission limit, wear resistance and corrosion resistance, high-frequency action, etc., and in addition, how to prevent the solid wear-resistant particles from accumulating at the rear part of the valve seat is also a difficult problem. Successful development of such valves is therefore of profound technical and market value.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a hard sealing fixed ball valve under severe coal gasification working conditions, which can work under severe working conditions such as black water, slurry, cinder and the like, prevent solid wear-resistant particles in a medium from accumulating at the rear part of a valve seat and meet the requirements of emission limit, wear resistance, corrosion resistance, high-frequency action and the like.
The aim of the invention is achieved by the following technical scheme:
a hard sealing fixed ball valve with severe coal gasification working conditions comprises a valve body, a first valve cover, a second valve cover, a valve rod, a ball body, a first valve seat and a second valve seat; the valve body, the first valve cover and the second valve cover are mutually fixed and form a main runner; the ball body is arranged in the main flow channel formed by the three parts, is controlled by the valve rod arranged on the ball body to further selectively close or penetrate through the main flow channel, the ball body is arranged between the first valve seat and the second valve seat and is arranged to be in sealing pair, a first bearing is arranged on the outer side of the first valve seat opposite to the valve body, a second bearing is arranged on the outer side of the second valve seat opposite to the valve body, the first bearing is arranged in the first valve cover, the second bearing is arranged in the second valve cover, the first bearing and the second bearing are coaxial with the first valve cover and the second valve cover respectively, and slotted holes are formed in the end faces, adjacent to the first valve seat and the second valve seat, of the first bearing and the second bearing respectively.
Preferably, the slotted holes are uniformly distributed on the end surfaces of the first bearing and the second bearing, the end surfaces are tightly attached to the outer side surfaces of the first valve seat and the second valve seat, and the slotted holes are concavely formed into an accommodating space for accommodating solid particles.
Preferably, the accommodating space is wedge-shaped, and one side facing the main runner is an inclined plane.
Preferably, the surfaces of the ball body, the first valve seat and the second valve seat, which are in contact with each other, are provided with a nickel-based alloy surface hardening coating, and the nickel-based alloy surface hardening coating is formed by a thermal spray welding process.
Preferably, a disc spring is further arranged between the second valve seat and the second bearing, and the disc spring compresses a first valve seat packing made of graphite material between the second valve seat and the second valve cover.
Preferably, a first valve seat filler, a spacing ring, a second valve seat filler and a first gasket are sequentially arranged along the axial direction of the second valve seat, the first gasket is under the pressure of the disc spring, the valve seat fillers are all made of graphite, and the spacing rings are separated to form double-side sealing; a first O-shaped ring is arranged between the second valve seat and the second valve cover; and structures symmetrical with the first valve seat, the first bearing and the first valve cover are arranged between the first valve seat and the first bearing.
Preferably, a supporting plate is arranged between the ball body and the valve body, and a bearing is arranged between the supporting plate and the ball body.
Preferably, the upper part of the valve body is further provided with a first pressing plate and a second pressing plate, the first pressing plate is fixedly connected with the valve body through a screw, the second pressing plate is fixedly connected with the first pressing plate through a screw, the first pressing plate presses the valve rod on the valve body, a rod handle of the valve rod penetrates through the first pressing plate and the second pressing plate, and a stuffing box is arranged between the valve rod and the first pressing plate and is parallel to the axis of the valve rod.
Preferably, an accommodating space is formed between the valve rod and the first pressing plate and between the valve rod and the second pressing plate, a scraper, a graphite gasket, a pressing sleeve, a first gasket, a pressing plate, a first lining, a packing box with packing, a second lining, a second gasket, a second O-shaped ring, a first thrust pad, a graphite ring and a second thrust pad are arranged in the accommodating space, the packing is formed by mixing PTEE and graphite from top to bottom in sequence along the axial direction of the valve rod.
Preferably, the scraper, the graphite gasket, the pressing sleeve and the first gasket are arranged between the valve rod and the second pressing plate, the pressing plate is arranged between the pressing sleeve and the first pressing plate, the first lining, the packing box, the second lining, the second gasket and the first thrust pad are arranged between the valve rod and the first pressing plate, the second gasket and the second O-shaped ring are arranged between the first pressing plate and the valve body, and the graphite ring and the second thrust pad are arranged between the valve rod and the valve body.
The beneficial effects of the invention are mainly as follows: the special stuffing box structure design, the bearing relief groove design and the sealing surface hardening layer pairing can effectively meet the severe working conditions of coal chemical industry, petrochemical industry and the like.
Drawings
FIG. 1 is a schematic diagram of a hard seal fixed ball valve under severe coal gasification conditions in an embodiment of the invention;
FIG. 2 is an enlarged view of a portion of the stuffing box of FIG. 1;
fig. 3 is an enlarged partial view of the second valve seat and second bearing of fig. 1.
The figures are labeled as follows:
1: a valve body; 2: a first valve cover; 3: a stud; 4: a nut; 5: a gasket; 6: a sphere; 7: a bearing; 8: a support plate; 9: a first bearing; 10: an O-ring; 11: a pin; 12: a screw; 13: a second pressing plate; 14: a valve stem; 15: a screw; 16: a first platen; 17: a scraper; 18: a graphite gasket; 19: pressing the sleeve; 20: a first gasket; 21: a first bushing; 22: a filler; 23: a second bushing; 24: a second gasket; 25: a second gasket; 26: a second O-ring; 27: a first thrust pad; 28: a graphite ring; 29: a second thrust pad; 30: a first O-ring; 31: a second valve seat; 32: a first valve seat packing; 33: a spacer ring; 34: a second valve seat packing; 35: a first gasket; 36: a disc spring; 37: a stuffing box; 38: a second valve cover; 39: a second bearing; 40: a first valve seat; 41: a pressing plate; 42: a slot.
Detailed Description
The objects, advantages and features of the present invention are illustrated and explained by the following non-limiting description of preferred embodiments. These embodiments are only typical examples of the technical scheme of the invention, and all technical schemes formed by adopting equivalent substitution or equivalent transformation fall within the scope of the invention.
As shown in fig. 1 to 3, the invention discloses a hard sealing fixed ball valve with severe coal gasification working condition, which is consistent with the prior art and comprises a valve body 1, a first valve cover 2, a second valve cover 38, a valve rod 14, a ball 6, a first valve seat 40 and a second valve seat 31. The valve body 1, the first valve cover 2 and the second valve cover 38 are mutually fixed and form a main flow passage; the ball 6 is disposed in the main flow passage formed by the three, and is controlled by the valve rod 14 disposed thereon to selectively close or penetrate the main flow passage. The valve rod 14 is connected with the ball body 6 through a pin 11. The valve body 1 is fixedly connected with the first valve cover 2 and the second valve cover 38 through the stud 3 and the nut 4, and a gasket 5 is arranged between the valve body 1 and the first valve cover 2 and between the valve body 1 and the second valve cover 38. A supporting plate 8 is arranged between the ball body 6 and the valve body 1, and a bearing 7 is arranged between the supporting plate 8 and the ball body 6.
The ball 6 is arranged between the first valve seat 40 and the second valve seat 31 and is in sealing pair, a first bearing 9 is arranged on the outer side of the first valve seat 40 opposite to the valve body 1, a second bearing 39 is arranged on the outer side of the second valve seat 31 opposite to the valve body 1, the first bearing 9 is arranged in the first valve cover 2, the second bearing 39 is arranged in the second valve cover 38, the first bearing 9 and the second bearing 39 are coaxial with the first valve cover 2 and the second valve cover 38 respectively, and an O-shaped ring 10 with a sealing function is arranged between the first bearing and the second bearing.
In the present invention, the first bearing 9 and the second bearing 39 are provided with slotted holes 42 on end surfaces adjacent to the first valve seat 40 and the second valve seat 31, respectively. As shown in fig. 1 and 3, the slots 42 are uniformly distributed on the end surfaces of the first bearing 9 and the second bearing 39, the end surfaces are tightly attached to the outer side surfaces of the first valve seat 40 and the second valve seat 31, and the slots 42 are concave inwards to form an accommodating space for accommodating solid particles. The accommodating space is wedge-shaped, and one side facing the main flow channel is an inclined plane. Because the solid wear-resistant particles in the coal gasification medium generally accumulate on the outer side surfaces of the existing first valve seat 40 and second valve seat 31, the sealing and service life of the ball valve are greatly damaged. The slotted hole 42 of the present invention can accommodate the solid wear-resistant particles, and when the main channel is penetrated, the solid wear-resistant particles can be easily discharged from the main channel due to the inclined surface of the slotted hole 42, thereby avoiding the solid wear-resistant particles from accumulating at the rear part of the valve seat.
In the invention, the surfaces of the ball 6, the first valve seat 40 and the second valve seat 31, which are in contact with each other, are provided with a nickel-based alloy surface hardening coating, and the nickel-based alloy surface hardening coating is formed by a thermal spray welding process. The surface hardening coating thickness of the sealing surface can reach 800 mu m, the hardness can reach 62HRC, and the bonding strength can reach 150MPa by adopting the surface thermal spray welding technology and the sealing pair pairing of the nickel-based alloy, so that the sealing surface has good wear resistance and corrosion resistance, and can be suitable for high-frequency action occasions.
As shown in fig. 3, a disc spring 36 is further disposed between the second valve seat 31 and the second bearing 39, and the disc spring 36 compresses a first valve seat packing 32 made of graphite between the second valve seat 31 and the second valve cover 38. Preferably, the first valve seat packing 32, the spacer ring 33, the second valve seat packing 34 and the first gasket 35 are sequentially arranged along the axial direction of the second valve seat 31, the first gasket 35 is under the pressure of the disc spring 36, and because high-temperature static seal is required between the valve cover and the valve seat, the valve seat packing 32 and 34 are made of graphite, and the spacer ring 33 separates to form double-side seal. A first O-ring 30 is also provided between the second valve seat 31 and the second valve cover 38. Thus, the sealing requirement of FCI 70-2 VI level can be met. Of course, a symmetrical structure is provided between the first valve seat 40 and the first bearing 9, and between the first valve cover 2.
In the invention, a first pressing plate 16 and a second pressing plate 13 are further arranged at the upper part of the valve body 1, the first pressing plate 16 is fixedly connected with the valve body 1 through a screw 12, the second pressing plate 13 is fixedly connected with the first pressing plate 16 through a screw 15, the first pressing plate 16 presses the valve rod 14 on the valve body 1, a rod handle of the valve rod 14 passes through the first pressing plate 16 and the second pressing plate 13, and a packing box 37 is arranged between the valve rod 14 and the first pressing plate 16 and is parallel to the axis of the valve rod 14.
An accommodating space is formed between the valve rod 14 and the first pressing plate 16 and between the valve rod and the second pressing plate 13, a scraper 17, a graphite gasket 18, a pressing sleeve 19, a first gasket 20, a pressing plate 41, a first bushing 21, a stuffing box 37 with stuffing 22, a second bushing 23, a second gasket 24, a second gasket 25, a second O-shaped ring 26, a first thrust pad 27, a graphite ring 28 and a second thrust pad 29 are arranged in the accommodating space in sequence from top to bottom along the axial direction of the valve rod 14, and the stuffing is formed by mixing PTEE and graphite. Preferably, the scraper 17, the graphite gasket 18, the pressing sleeve 19 and the first gasket 20 are arranged between the valve rod 14 and the second pressing plate 13, the pressing plate 41 is arranged between the pressing sleeve 19 and the first pressing plate 16, the first bushing 21, the packing box 37, the second bushing 23, the second gasket 24 and the first thrust pad 27 are arranged between the valve rod 14 and the first pressing plate 16, the second gasket 25 and the second O-ring 26 are arranged between the first pressing plate 16 and the valve body 1, and the graphite ring 28 and the second thrust pad 29 are arranged between the valve rod 14 and the valve body 1.
In the invention, since the raw material in the coal gasification process is coal dust, the scraper 17 plays a role of an oil seal to prevent the coal dust from entering the ball valve from the outside. The graphite gasket 18 also serves as a seal. The packing 22 in the packing box 37 of the present invention is made of a mixture of PTEE and graphite because the valve stem 14 requires dynamic sealing and a double packing seal is used in the present invention. The first thrust pad 27, the graphite ring 28 and the second thrust pad 29 are arranged in the invention to play a role of a bearing, so that the shaking of the valve rod 14 is further prevented, and the sealing effect of the invention is greatly enhanced. Of course, any modified solution that omits one of the components is within the scope of the present invention.
In the present invention, there are two or more similar layouts and applications of screws, nuts, studs, pins, support plates, bearings, gaskets, valve seat packing, spacer rings, washers, O-rings, etc., which are not shown one by one in the present specification.
The invention has various embodiments, and all technical schemes formed by equivalent transformation or equivalent transformation fall within the protection scope of the invention.
Claims (10)
1. The hard sealing fixed ball valve with severe coal gasification working conditions comprises a valve body (1), a first valve cover (2), a second valve cover (38), a valve rod (14), a ball body (6), a first valve seat (40) and a second valve seat (31); the valve body (1), the first valve cover (2) and the second valve cover (38) are mutually fixed and form a main runner; the ball body (6) is arranged in the main flow passage formed by the ball body and the valve rod (14) arranged on the ball body, and the ball body is controlled by the valve rod to selectively close or penetrate through the main flow passage, and is characterized in that: the ball body (6) set up in between first disk seat (40) and second disk seat (31) and set up to sealed pair, the outside of first disk seat (40) is relative valve body (1) is provided with first bearing (9), the outside of second disk seat (31) is relative valve body (1) is provided with second bearing (39), first bearing (9) set up in the inside of first valve gap (2), second bearing (39) set up in the inside of second valve gap (38), first bearing (9) with first valve gap (2) coaxial line, second bearing (39) with second valve gap (38) coaxial line, first bearing (9) are close to be provided with on the terminal surface of first disk seat (40) slotted hole (42), second bearing (39) are close to be provided with on the terminal surface of second disk seat (31).
2. The hard sealing fixed ball valve for severe coal gasification conditions according to claim 1, wherein: the slotted holes (42) are uniformly distributed on the end surfaces of the first bearing (9) and the second bearing (39), the end surfaces are tightly attached to the outer side surfaces of the first valve seat (40) and the second valve seat (31), and the slotted holes (42) are concavely formed into an accommodating space for accommodating solid particles.
3. The hard sealing fixed ball valve for severe coal gasification conditions according to claim 2, wherein: the accommodating space is wedge-shaped, and one side facing the main flow channel is an inclined plane.
4. The hard sealing fixed ball valve for severe coal gasification conditions according to claim 1, wherein: the surfaces of the ball body (6), the first valve seat (40) and the second valve seat (31) which are contacted with each other are provided with nickel-based alloy surface hardening coatings, and the nickel-based alloy surface hardening coatings are formed by a thermal spray welding process.
5. The hard sealing fixed ball valve for severe coal gasification conditions according to claim 1, wherein: a disc spring (36) is further arranged between the second valve seat (31) and the second bearing (39), the disc spring (36) tightly presses a first valve seat filler (32) made of graphite between the second valve seat (31) and the second valve cover (38), the first valve seat filler (32), the isolating ring (33), the second valve seat filler (34) and the first gasket (35) are sequentially arranged along the axial direction of the second valve seat (31), the first gasket (35) is subjected to the pressure of the disc spring (36), and the first valve seat filler and the second valve seat filler (32, 34) are made of graphite and are separated by the isolating ring (33) to form double-side sealing; a first O-shaped ring (30) is further arranged between the second valve seat (31) and the second valve cover (38).
6. The hard sealing fixed ball valve for severe coal gasification conditions according to claim 5, wherein: a disc spring (36) is further arranged between the first valve seat (40) and the first bearing (9), the disc spring (36) tightly presses a first valve seat filler (32) made of graphite between the first valve seat (40) and the first valve cover (2), the first valve seat filler (32), a separation ring (33), a second valve seat filler (34) and a first gasket (35) are sequentially arranged along the axial direction of the first valve seat (40), the first gasket (35) is subjected to the pressure of the disc spring (36), and the first valve seat filler and the second valve seat filler (32, 34) are made of graphite and are separated by the separation ring (33) to form double-side sealing; a first O-shaped ring (30) is further arranged between the first valve seat (40) and the first valve cover (2).
7. The hard sealing fixed ball valve for severe coal gasification conditions according to claim 1, wherein: a supporting plate (8) is arranged between the ball body (6) and the valve body (1), and a bearing (7) is arranged between the supporting plate (8) and the ball body (6).
8. The hard sealing fixed ball valve for severe coal gasification conditions according to any one of claims 1 to 7, wherein: the upper portion of valve body (1) still is provided with first clamp plate (16) and second clamp plate (13), first clamp plate (16) pass through screw (12) with valve body (1) fixed connection, second clamp plate (13) pass through screw (15) with first clamp plate (16) fixed connection, first clamp plate (16) will valve rod (14) are pressed on valve body (1), the stem of valve rod (14) passes first clamp plate (16) with second clamp plate (13), valve rod (14) with be provided with between first clamp plate (16) packing box (37), its parallel arrangement in the axis of valve rod (14).
9. The hard sealing fixed ball valve for severe coal gasification conditions according to claim 8, wherein: an accommodating space is formed between the valve rod (14) and the first pressing plate (16) and between the second pressing plate (13), a scraper (17), a graphite gasket (18), a pressing sleeve (19), a first gasket (20), a pressing plate (41), a first lining (21), a packing box (37) with a packing (22), a second lining (23), a second gasket (24), a second gasket (25), a second O-shaped ring (26), a first thrust pad (27), a graphite ring (28) and a second thrust pad (29) are sequentially arranged in the accommodating space from top to bottom along the axis direction of the valve rod (14), and the packing is formed by mixing PTEE and graphite.
10. The hard sealing fixed ball valve for severe coal gasification conditions according to claim 9, wherein: scraper (17), graphite gasket (18), press cover (19) and first gasket (20) set up in valve rod (14) with between second clamp plate (13), clamp plate (41) set up in press cover (19) with between first clamp plate (16), first bush (21), stuffing box (37), second bush (23), second packing ring (24) and first thrust pad (27) set up in valve rod (14) with between first clamp plate (16), second gasket (25) and second O type circle (26) set up in between first clamp plate (16) with valve body (1), graphite ring (28) and second thrust pad (29) set up in between valve rod (14) and valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711432881.4A CN108119688B (en) | 2017-12-26 | 2017-12-26 | Hard sealing fixed ball valve for severe coal gasification working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711432881.4A CN108119688B (en) | 2017-12-26 | 2017-12-26 | Hard sealing fixed ball valve for severe coal gasification working condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108119688A CN108119688A (en) | 2018-06-05 |
| CN108119688B true CN108119688B (en) | 2024-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711432881.4A Active CN108119688B (en) | 2017-12-26 | 2017-12-26 | Hard sealing fixed ball valve for severe coal gasification working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108119688B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653824A (en) * | 2021-08-13 | 2021-11-16 | 哈电集团哈尔滨电站阀门有限公司 | Scouring-resistant ball valve |
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| WO1999058884A1 (en) * | 1998-05-12 | 1999-11-18 | Jang Hong Ahn | Ball valve |
| CN102927311A (en) * | 2012-11-10 | 2013-02-13 | 无锡智能自控工程股份有限公司 | One-way sealing top-installing adjusting ball valve |
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| CN203488775U (en) * | 2013-06-18 | 2014-03-19 | 科普蓝(上海)阀门工业有限公司 | Ball valve with integrated valve rod and ball core |
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| CN104455509A (en) * | 2014-11-21 | 2015-03-25 | 苏州福润机械有限公司 | Gate valve |
| CN204459250U (en) * | 2015-01-14 | 2015-07-08 | 意阀（苏州）阀门有限公司 | A kind of new type high temperature hard seal ball valve |
| CN204717038U (en) * | 2015-06-19 | 2015-10-21 | 环球阀门集团有限公司 | Novel quick closing valve hard seal fixing ball valve |
| CN105134992A (en) * | 2015-09-14 | 2015-12-09 | 圣博莱阀门有限公司 | PDS high-frequency discharging ball valve |
| CN206257297U (en) * | 2016-12-19 | 2017-06-16 | 浙江上工阀门有限公司 | High-temperature and high-pressure wearable fixing ball valve |
| CN207740523U (en) * | 2017-12-26 | 2018-08-17 | 福斯流体控制（苏州）有限公司 | The harsh operating mode hard seal fixing ball valve of coal gasification |
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| KR20170125890A (en) * | 2015-03-13 | 2017-11-15 | 뉴 웨이 머신 컴포넌츠, 인코포레이티드 | External pressurized porous media gas bearings used in valves and able to prevent fugitive emissions |
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| CN202955270U (en) * | 2012-11-08 | 2013-05-29 | 西安希佛隆阀门有限公司 | Hard sealing ball valve |
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| CN203488775U (en) * | 2013-06-18 | 2014-03-19 | 科普蓝(上海)阀门工业有限公司 | Ball valve with integrated valve rod and ball core |
| CN203686209U (en) * | 2013-11-20 | 2014-07-02 | 无锡智能自控工程股份有限公司 | High-pressure balance type forged switching ball valve with self sealing of fillers |
| CN203718008U (en) * | 2013-12-18 | 2014-07-16 | 雷蒙德（北京）阀门制造有限公司 | Floating type rigid sealing ball valve |
| CN104455509A (en) * | 2014-11-21 | 2015-03-25 | 苏州福润机械有限公司 | Gate valve |
| CN204459250U (en) * | 2015-01-14 | 2015-07-08 | 意阀（苏州）阀门有限公司 | A kind of new type high temperature hard seal ball valve |
| CN204717038U (en) * | 2015-06-19 | 2015-10-21 | 环球阀门集团有限公司 | Novel quick closing valve hard seal fixing ball valve |
| CN105134992A (en) * | 2015-09-14 | 2015-12-09 | 圣博莱阀门有限公司 | PDS high-frequency discharging ball valve |
| CN206257297U (en) * | 2016-12-19 | 2017-06-16 | 浙江上工阀门有限公司 | High-temperature and high-pressure wearable fixing ball valve |
| CN207740523U (en) * | 2017-12-26 | 2018-08-17 | 福斯流体控制（苏州）有限公司 | The harsh operating mode hard seal fixing ball valve of coal gasification |
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| CN108119688A (en) | 2018-06-05 |
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