CN105134992A - PDS high-frequency discharging ball valve - Google Patents
PDS high-frequency discharging ball valve Download PDFInfo
- Publication number
- CN105134992A CN105134992A CN201510582652.5A CN201510582652A CN105134992A CN 105134992 A CN105134992 A CN 105134992A CN 201510582652 A CN201510582652 A CN 201510582652A CN 105134992 A CN105134992 A CN 105134992A
- Authority
- CN
- China
- Prior art keywords
- valve
- pds
- valve seat
- spheroid
- ball body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- 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
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a PDS high-frequency discharging ball valve which comprises a valve body, a valve deck, a valve seat, a ball body, a filler box, filler, a filler gland, a disc spring and a graphite ring. The ball body and a valve rod are of an integrated structure. A flow pass hole penetrating through the ball body is formed in the middle of the ball body. The valve seat, the disc spring and the graphite ring are matched with an inner hole of the valve deck, and a dustproof ring is arranged at the tail of the valve seat. Bearings used for supporting the ball body and the valve seat and receiving medium thrust are arranged on the side faces of the upper end and the lower end of the ball body respectively. The ball valve is simple in structure, convenient to use, suitable for high-frequency switches and rigorous working conditions like wear resisting, and capable of being used in a long-period mode, and the limit life of the switches is more than one million times.
Description
Technical field
The present invention relates to discharge ball valve field, particularly PDS high frequency discharge ball valve.
Background technique
Along with various new process engineering exploitation and Technology Progress, the list cover throughput of the olefin hydrocarbon apparatus such as polypropylene and polyethylene is increasing, competition between manufacturing enterprise is also more and more fierce, the long-term operation of process units can not only reduce cost of production and improve the market competitiveness of enterprise, more can the safety of assurance device and stable production run; The olefin hydrocarbon apparatus such as polypropylene and polyethylene belongs to agent set in large-scale ethene petroleum chemical enterprise, because its production technology reacts the process of producing solid polymer by phase feed, the difficulty realizing continuous long-cycle production is also larger, and wherein affecting one of principal element of device long-term operation is exactly whether the blow-off valve of product discharge system is reliable.
A large amount of polyolefin device adopting UNIVATION technique both at home and abroad, this technique by gas-phase polythene or polypropylene in a fluidized bed reactor, under catalyst action, reaction generates polyethylene or the polypropylene of powdery, when the product of powdery is piled up a certain amount of in reactor bed, automatic control product discharge system (productsdischargesystem) i.e. PDS system discharge, so product blow-off valve also claims PDS valve.
PDS valve is the discharge realizing product by logical order action, and when any one valve event in PDS system is not in place or fault, this PDS system cannot normal running, and due to the Liquified gas tanker of process engineering, PDS valve faces following challenge:
1, high operating frequency and cycle-index, valve controls annual time of movement about 1,000,000 times by PDS control system, and action request valve has high reliability frequently.
2, harsh sealing class requirement, should reach zero leakage.
3, High Pressure Difference, sealing pair washes away seriously.
4, quick acting during valve switch, from opening → closing and all need complete in 1 second from closing → opening, can reduce the impact on fluidized-bed reaction like this when discharge.
At present, common hard seal ball valve is for reducing manufacturing cost, during design, valve rod and spheroid adopt split-type structural (see Fig. 1), this structural design can meet most of low frequency (being less than 8000 times/year), (open → close at a slow speed, be greater than 10 seconds) etc. operation operating mode usage requirement, but row access cycle is still less than 2 years, the ultimate life of switch is no more than 20,000 times; Mainly cause valves leakage because of sealing surface scratch, cannot continue to use, meanwhile, also have and much cause the case of valve invalidation because valve rod and spheroid joint are out of shape excessive; Especially, when snap switch, the inertial force that joint loads is very large, more easily causes valve rod and valve ball joint to be out of shape.Therefore, if do not carried out architecture advances and innovation, adopt conventional design cannot meet HF switch requirement.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of structure is simple, the PDS high frequency discharge ball valve of long service life.
For achieving the above object, technological scheme of the present invention is as follows:
PDS high frequency discharge ball valve, described ball valve comprises valve body, valve gap, valve seat, spheroid, Stuffing box, filler, Gland, disc spring and graphite annulus, and described spheroid and valve rod are formed in one structure, and the middle part of described spheroid is provided with the runner hole that runs through spheroid; The inner hole of described valve seat, disc spring, graphite annulus and valve gap, the afterbody of valve seat is provided with dust ring; The side at the upper and lower two ends of described spheroid is equipped with the bearing receiving medium thrust for supporting sephere and valve seat.
In one embodiment of the invention, described bearing is processed into by high-abrasive material.
In one embodiment of the invention, described valve gap, all with bolts between Stuffing box and valve body, its joint is equipped with pad.
By technique scheme, the invention has the beneficial effects as follows:
Structure of the present invention is simple, easy to use, is applicable to HF switch, the harsh operating mode such as wear-resisting, and can use by long period, and its switch ultimate life is greater than 1,000,000 times.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the connection diagram of spheroid of the present invention and valve rod;
Numeral and the corresponding part title represented by letter in figure:
10, valve body 20, valve gap 30, valve seat 31, dust ring 40, spheroid 41, runner hole 42, bearing 50, Stuffing box 60, filler 70, Gland 80, disc spring 90, graphite annulus 100, bolt 110, pad 120, valve rod.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
Shown in Fig. 1 and Fig. 2, the invention discloses PDS high frequency discharge ball valve, ball valve comprises valve body 10, valve gap 20, valve seat 30, spheroid 40, Stuffing box 50, filler 60, Gland 70, disc spring 80 and graphite annulus 90, spheroid 40 and valve rod 120 are formed in one structure, its easy to process, long service life; Be provided with the runner hole 41 that runs through spheroid at the middle part of spheroid 40, spheroid is rotary component, the flowing medium be used in cut-out and connecting pipe.
The inner hole of valve seat 30 of the present invention, disc spring 80, graphite annulus 90 and valve gap 20, valve seat 30 is under the effect of spring and medium power, its sealing surface and spheroid contact completely and keep sealing, dust ring 31 is provided with at the afterbody of valve seat 30, dust ring 31 can block media powder or particle enter in disc spring cavity, prevents disc spring from blocking and the compensating action that follows the string; Meanwhile, graphite annulus 90 is in compressive state all the time, can guarantee to keep reliable sealing between valve seat and valve gap.
The present invention is equipped with the bearing 42 receiving medium thrust for supporting sephere and valve seat on the side at the upper and lower two ends of spheroid, and bearing 42 plays guiding simultaneously, guarantees spheroid rotation centerline and valve seat runner central axis, makes valve switch smooth and easy, not bite.
Bearing of the present invention is processed into by high-abrasive material, and during for ensureing valve frequent switch, sealing surface can not abrade.
Valve gap 20 of the present invention, all adopt bolt 100 to be connected between Stuffing box 50 with valve body 10, its joint is equipped with pad 110, and pad 110 for guaranteeing that medium can not leak outside, thus improves the sealability of ball valve.
More than show and describe basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1.PDS high frequency discharge ball valve, it is characterized in that, described ball valve comprises valve body, valve gap, valve seat, spheroid, Stuffing box, filler, Gland, disc spring and graphite annulus, and described spheroid and valve rod are formed in one structure, and the middle part of described spheroid is provided with the runner hole that runs through spheroid; The inner hole of described valve seat, disc spring, graphite annulus and valve gap, the afterbody of valve seat is provided with dust ring; The side at the upper and lower two ends of described spheroid is equipped with the bearing receiving medium thrust for supporting sephere and valve seat.
2. PDS high frequency discharge ball valve according to claim 1, it is characterized in that, described bearing is processed into by high-abrasive material.
3. PDS high frequency discharge ball valve according to claim 1, is characterized in that, described valve gap, all with bolts between Stuffing box and valve body, and its joint is equipped with pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510582652.5A CN105134992A (en) | 2015-09-14 | 2015-09-14 | PDS high-frequency discharging ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510582652.5A CN105134992A (en) | 2015-09-14 | 2015-09-14 | PDS high-frequency discharging ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105134992A true CN105134992A (en) | 2015-12-09 |
Family
ID=54720466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510582652.5A Pending CN105134992A (en) | 2015-09-14 | 2015-09-14 | PDS high-frequency discharging ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105134992A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195316A (en) * | 2016-08-30 | 2016-12-07 | 上海核阀门制造有限公司 | A kind of seal ball-valve for the solid operating mode of height |
| CN108119688A (en) * | 2017-12-26 | 2018-06-05 | 福斯流体控制（苏州）有限公司 | The harsh operating mode hard seal fixing ball valve of coal gasification |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062230A (en) * | 2009-11-13 | 2011-05-18 | 陈红妹 | Ball valve |
| CN202955270U (en) * | 2012-11-08 | 2013-05-29 | 西安希佛隆阀门有限公司 | Hard sealing ball valve |
| CN205001552U (en) * | 2015-09-14 | 2016-01-27 | 圣博莱阀门有限公司 | Pellet valve is arranged to PDS high frequency |
-
2015
- 2015-09-14 CN CN201510582652.5A patent/CN105134992A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062230A (en) * | 2009-11-13 | 2011-05-18 | 陈红妹 | Ball valve |
| CN202955270U (en) * | 2012-11-08 | 2013-05-29 | 西安希佛隆阀门有限公司 | Hard sealing ball valve |
| CN205001552U (en) * | 2015-09-14 | 2016-01-27 | 圣博莱阀门有限公司 | Pellet valve is arranged to PDS high frequency |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106195316A (en) * | 2016-08-30 | 2016-12-07 | 上海核阀门制造有限公司 | A kind of seal ball-valve for the solid operating mode of height |
| CN108119688A (en) * | 2017-12-26 | 2018-06-05 | 福斯流体控制（苏州）有限公司 | The harsh operating mode hard seal fixing ball valve of coal gasification |
| CN108119688B (en) * | 2017-12-26 | 2024-01-02 | 福斯流体控制（苏州）有限公司 | Hard sealing fixed ball valve for severe coal gasification working condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151209 |
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| RJ01 | Rejection of invention patent application after publication |