CN100529487C - Integral top mounting type ultra-high pressure and ultra low temperature hard seal ball valve - Google Patents
Integral top mounting type ultra-high pressure and ultra low temperature hard seal ball valve Download PDFInfo
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- CN100529487C CN100529487C CNB2008102120375A CN200810212037A CN100529487C CN 100529487 C CN100529487 C CN 100529487C CN B2008102120375 A CNB2008102120375 A CN B2008102120375A CN 200810212037 A CN200810212037 A CN 200810212037A CN 100529487 C CN100529487 C CN 100529487C
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Abstract
Disclosed is an internal top-mounting type super-high pressure super-low temperature hard sealing ball valve, which is mainly composed of a valve body (1), a valve cover (24), a ball body with a handle (3), a valve seat (13), a rear valve seat (10), a valve rod bearing seat (16) and the like. The ball body with a handle (3) placed in the valve body (1) penetrates through the center of the valve cover (24), and the ball body with a handle (3) is enabled to rotate 90 degrees by an external force to realize the opening and the closing of pipes. The sphere sealing is realized by that two sides of the ball body with a handle (3) hold the rear valve seat (10) and the valve seat (13), and a valve seat spring (12) elastically pushes and presses the ball body with a handle (3). The sealing of a valve rod employs a unique three-ply sealing structure of a self-sealing preloading device, which can guarantee sealing under low pressure, and under the action of high pressure, medium pressure action realizes self-sealing for a bearing ring (17), thereby avoiding that filling material sealing needs the high-strength pressure, and the torque becomes extremely large when the valve rod is opened.
Description
(1) technical field
The present patent application relates to a kind of ball valve, relates to a kind of integral top mounting type ultra-high pressure, ultra low temperature hard seal ball valve particularly.
(2) background technique
Ball valve is a kind of at the widely used valve in industrial production field, but under the environment of some specific (special) requirements, in the switching as media such as deep-sea ocean platform, rock gas air reservoir and space flight devices, under the environment of high pressure and ultralow temperature, the sealing of ball valve, intensity and valve torque all can go wrong, thereby influence is normal
Produce and use.Do not reach desirable requirement at long-term ultralow temperature, hardness, intensity, the wear-resisting and decay resistance of material under the high pressure conditions, often need high performance ball valve.
In the environment of ultrahigh pressure ultralow temperature, especially need a kind of good sealing effect, open and close torque is less, can online replacing or the ball valve of maintenance.
(3) summary of the invention
[problem that will solve]
A kind of ball valve that is applicable to ultrahigh pressure ultralow temperature operating mode is provided, and especially can the withstanding pressure scope be that (just 13.8～138.5MPa), temperature range is the ball valve of-196 ℃～260 ℃ of ultrahigh pressure ultralow temperature to 2000Psi～10000Psi;
Provide a kind of and have good corrosion resistance, to 30 kinds of almost negligible ball valves of aggressive medium;
A kind of ball valve that adopts roof-mounted structure is provided, and this valve can online replacing and maintenance, and its valve seat adopts unique major and minor sealing split pressure reduction structure;
Provide a kind of sealing of valve rod to adopt unique selfsealings pre-tightening apparatus triple seal structure (the one, stainless steel metal O shape circle, the 2nd, the pre-tightening seal of belleville spring, the 3rd, pressing plate filler), make it under low pressure conditions, can guarantee sealing, under the high pressure effect, medium acts on bearing ring and realizes selfsealings, thereby avoid packing seal to need high-intensity preload pressure, make valve rod open moment of torsion and become very big.So adopt unique selfsealings pre-tightening apparatus triple seal structure, the moment of torsion of valve reaches the pure torsion operation.
A kind of ball valve with fire prevention, antistatic design is provided.
[technological scheme]
A kind of integral top mounting type ultra-high pressure, ultra low temperature hard seal ball valve, this hard seal ball valve comprises valve body 1, places band handle spheroid 3, the valve gap 24 of valve body 1 inside and the valve rod that passes valve gap 24, band handle spheroid 3 bottoms place the groove at the bottom centre place of valve body 1 by base bearing 4 and lower shaft bearing 2, the top of band handle spheroid 3 links to each other with valve rod, pressing plate 26 is fixed on the valve gap 24 by double-screw bolt 27 and nut 28, and pressing plate 26 is pressed to valve gap 24 round valve rod with filler 21; Be disposed with stainless steel metal O shape circle 33, stuffing box packing 21, bearer ring 20, valve seat butterfly spring 19, thrust-bearing 18 and bearing ring 17 between valve gap 24 and valve rod from top to bottom, wherein valve gap 24 also is to be fixed on the valve body 1 by double-screw bolt and nut.
The outside at band handle spheroid 3 is a valve seat 13, and the arranged outside of valve seat 13 has rear valve base 10, and rear valve base 10 is embedded with sealing seat 11 to guarantee the sealing between rear valve base 10 and the valve seat 13.
Between rear valve base 10 and valve body 1, be disposed with stainless steel metal O shape circle, seal ring 7, pressure ring 6 and the valve seat butterfly spring 12 of seal action from inside to outside.
The position that the top of band handle spheroid 3 is connected with valve rod is provided with stem shaft bearing 16.
Be provided with stainless steel metal O shape circle 42 between valve gap 24 and valve body 1, the end face between valve gap 24 and the valve body 1 is provided with flange gasket 32 in the stainless steel folder Expanded graphite.
The top of valve is provided with the support 31 that is used to protect, and opens and closes the moment slewing gear on support 31.
[beneficial effect]
The valve body of valve adopts the forged steel manufacturing, has promptly guaranteed can keep under the effect under the high pressure resistance to compression harmony of its structure, has effectively avoided the casting defect of using Cast Steel to exist.
Spheroid adopts overall structure, valve seat adopts unique major and minor sealing split pressure reduction structure, primary seal adopts cemented carbide to contact with spheroid and guarantees seal request, low temperature resistant polymeric material is adopted in secondary sealing, guarantee the valve base sealing performance can cushion the effect of high pressure on the other hand on the one hand, make the seal pressure of valve reduce, even under the ultrahigh pressure operating mode, the unlatching moment of torsion of valve is but very little.
Unique pressure selfsealings pre-pressing structure is adopted in the sealing of valve rod, triple seal device (the one, stainless steel metal O type circle, the 2nd, the pre-tightening seal of butterfly property spring, the 3rd, pressing plate filler), under low pressure conditions, can guarantee sealing, under the high pressure effect, medium acts on bearing ring and realizes selfsealings, thereby avoid packing seal to need high-intensity pressure, valve rod is opened moment of torsion and is become very big.So adopt unique selfsealings pre-pressing structure, triple seal device, the moment of torsion of valve reach the pure torsion operation.
Metal O type circle and flexible graphite gasket double seal are adopted in sealing between valve gap and the valve body, have guaranteed that the tiny leakage of valve meets standard-required.
(4) description of drawings
Fig. 1 is the longitudinal sectional view of ball valve;
Fig. 2 is the local enlarged diagram of A portion among Fig. 1;
Fig. 3 is the local enlarged diagram of B portion among Fig. 1.
(5) embodiment
Describe the structure of this integral top mounting type ultra-high pressure, ultra low temperature hard seal ball valve in detail below in conjunction with accompanying drawing 1-3.The structure of valve for convenience of explanation, the direction of stretching out with valve rod are last, opposite direction for down; Band handle spheroid with the center of ball valve is a valve internal, then is outside away from the direction of band handle spheroid.
Fig. 1 has shown the structure sectional view of integral top mounting type ultra-high pressure, ultra low temperature hard seal ball valve.This hard seal ball valve passes stem shaft bearing 16, bearing ring 17, thrust-bearing 18, butterfly spring 19, bearer ring 20, stuffing box packing 21, middle flange gasket 32 and valve gap 24 at valve body 1 central position built-in band handle spheroid 3 and ball handle top; Valve seat 13 and the rear valve base 10 of holding symmetry simultaneously in the spheroid both sides, and, realize ball face sealing with valve seat butterfly spring 12 elastic force pushing band handle spheroid 3.Be fixed on the valve body 1 at valve gap 24 by bolt 27 nuts 28, the valve gap 24 packing cavity clamping platens 26 of again stuffing box packing 21 being packed into are realized the sealing of ball shank.
Described integral top mounting type ultra-high pressure, ultra low temperature hard seal ball valve, this hard seal ball valve comprises valve body 1, places band handle spheroid 3, the valve gap 24 of valve body 1 inside and the valve rod that passes valve gap 24, band handle spheroid 3 bottoms place the groove at the bottom centre place of valve body 1 by base bearing 4 and lower shaft bearing 2, the top of band handle spheroid 3 links to each other with valve rod, pressing plate 26 is fixed on the valve gap 24 by double-screw bolt 27 and nut 28, and pressing plate 26 is pressed to valve gap 24 round valve rod with stuffing box packing 21; Be disposed with stainless steel metal O shape circle 33, stuffing box packing 21, bearer ring 20, valve seat butterfly spring 19, thrust-bearing 18 and bearing ring 17 between valve gap 24 and valve rod from top to bottom, wherein valve gap 24 also is to be fixed on the valve body 1 by double-screw bolt and nut.
The outside at band handle spheroid 3 is a valve seat 13, and the arranged outside of valve seat 13 has rear valve base 10, and rear valve base 10 is embedded with sealing seat 11 to guarantee the sealing between rear valve base 10 and the valve seat 13.Between rear valve base 10 and valve body 1, be disposed with stainless steel metal O shape circle, seal ring 7, pressure ring 6 and the valve seat butterfly spring 12 of seal action from inside to outside.The position that the top of band handle spheroid 3 is connected with valve rod is provided with stem shaft bearing 16.Be provided with stainless steel metal O shape circle 42 between valve gap 24 and valve body 1, the end face between valve gap 24 and the valve body 1 is provided with flange gasket 32 in the stainless steel folder Expanded graphite.The top of valve is provided with the support 31 that is used to protect, and opens and closes the moment slewing gear on support 31.Keying moment slewing gear does not wherein illustrate in the accompanying drawings, and various known suitable keying moment slewing gears all as power plant, are realized the keying of autocontrol valve, is not just describing in detail one by one at this for this point.
Fig. 2 demonstrates band handle ball handle 3 and valve gap 24 inner sealing configurations for the first time.It is with band handle ball handle pass stem shaft bearing 16, bearing ring 17, thrust-bearing 18, butterfly spring 19, bearer ring 20, stuffing box packing 21 by the bolt on the valve gap 24 27, nut 28 compress make in butterfly spring 19 stressed generation elastic force reach the inner sealing for the first time of ball handle.
Fig. 3 then demonstrates band handle spheroid 3 both sides and holds the arranged outside rear valve base (10) of the valve seat 13 of symmetry, and between valve seat (13) and rear valve base (10) the sealing abaculus is set, and seals between the assurance.Between rear valve base (10) and valve body (1), be disposed with simultaneously stainless steel metal O type circle (33), seal ring (7), pressure ring 6 and the valve seat butterfly spring 12 of seal action from inside to outside.
Above listed a series of detailed description only is specifying at a feasibility embodiment of the present invention, but this embodiment is not in order to limit claim of the present invention, allly do not break away from equivalent embodiment or the change that skill spirit of the present invention is done, for example, equivalence embodiment Deng changing all should be contained within the claim of this case.
Claims (7)
1, a kind of integral top mounting type ultra-high pressure, ultra low temperature hard seal ball valve, this hard seal ball valve comprises valve body (1), places valve body (1) inner band handle spheroid (3), valve gap (24) and the valve rod that passes valve gap (24), band handle spheroid (3) bottom places the groove at the bottom centre place of valve body (1) by base bearing (4) and lower shaft bearing (2), the top of band handle spheroid (3) links to each other with valve rod, it is characterized in that:
Pressing plate (26) is fixed on the valve gap (24) by double-screw bolt (27) and nut (28), and pressing plate (26) is pressed to valve gap (24) round valve rod with stuffing box packing (21); Be disposed with stainless steel metal O shape circle (33), stuffing box packing (21), bearer ring (20), valve seat butterfly spring (19), thrust-bearing (18) and bearing ring (17) between valve gap (24) and valve rod from top to bottom, wherein valve gap (24) also is to be fixed on the valve body (1) by double-screw bolt and nut.
2, integral top mounting type ultra-high pressure according to claim 1, ultra low temperature hard seal ball valve, it is characterized in that: the outside at band handle spheroid (3) is valve seat (13), the arranged outside of valve seat (13) has rear valve base (10), and rear valve base (10) is embedded with sealing seat (11) to guarantee the sealing between rear valve base (10) and the valve seat (13).
3, integral top mounting type ultra-high pressure according to claim 1 and 2, ultra low temperature hard seal ball valve is characterized in that: the stainless steel metal O shape circle, seal ring (7), pressure ring (6) and the valve seat butterfly spring (12) that are disposed with seal action between rear valve base (10) and valve body (1) from inside to outside.
4, integral top mounting type ultra-high pressure according to claim 1 and 2, ultra low temperature hard seal ball valve is characterized in that: the position that the top of band handle spheroid (3) is connected with valve rod is provided with stem shaft bearing (16).
5, integral top mounting type ultra-high pressure according to claim 3, ultra low temperature hard seal ball valve is characterized in that: the position that the top of band handle spheroid (3) is connected with valve rod is provided with stem shaft bearing (16).
6, according to claim 2 or 5 described integral top mounting type ultra-high pressures, ultra low temperature hard seal ball valve, it is characterized in that: be provided with stainless steel metal O shape circle (42) between valve gap (24) and valve body (1), the end face between valve gap (24) and the valve body (1) is provided with flange gasket (32) in the stainless steel folder Expanded graphite.
7, the integral top mounting type ultra-high pressure described in the claim 2 or 5, ultra low temperature hard seal ball valve is characterized in that: the top of valve is provided with the support (31) that is used to protect, and opens and closes the moment slewing gear on support (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008102120375A CN100529487C (en) | 2008-09-12 | 2008-09-12 | Integral top mounting type ultra-high pressure and ultra low temperature hard seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008102120375A CN100529487C (en) | 2008-09-12 | 2008-09-12 | Integral top mounting type ultra-high pressure and ultra low temperature hard seal ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101349354A CN101349354A (en) | 2009-01-21 |
| CN100529487C true CN100529487C (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008102120375A Active CN100529487C (en) | 2008-09-12 | 2008-09-12 | Integral top mounting type ultra-high pressure and ultra low temperature hard seal ball valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN100529487C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581375A (en) * | 2009-06-26 | 2009-11-18 | 昆山维萨阀门有限公司 | Metal hard seal ball valve |
| CN102392902B (en) * | 2011-07-12 | 2013-02-27 | 天津祥嘉流体控制系统有限公司 | Top-mounted ball valve |
| CN102606774A (en) * | 2012-03-22 | 2012-07-25 | 意本阀门有限公司 | Pigging check valve |
| CN102758964B (en) * | 2012-07-11 | 2013-07-31 | 南通高中压阀门有限公司 | Low-loss self-compensating system for filler loss |
| CN104180010A (en) * | 2014-08-28 | 2014-12-03 | 上海阀门厂有限公司 | Top-mounted ball valve |
| CN104265942A (en) * | 2014-10-21 | 2015-01-07 | 成都市翻鑫家科技有限公司 | Low-torque metal hard sealing plug valve |
-
2008
- 2008-09-12 CN CNB2008102120375A patent/CN100529487C/en active Active
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| Publication number | Publication date |
|---|---|
| CN101349354A (en) | 2009-01-21 |
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