CN202659948U - High-temperature metal hard sealing ball valve for granular medium - Google Patents
High-temperature metal hard sealing ball valve for granular medium Download PDFInfo
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- CN202659948U CN202659948U CN 201220169111 CN201220169111U CN202659948U CN 202659948 U CN202659948 U CN 202659948U CN 201220169111 CN201220169111 CN 201220169111 CN 201220169111 U CN201220169111 U CN 201220169111U CN 202659948 U CN202659948 U CN 202659948U
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Abstract
The utility model provides a high-temperature metal hard sealing ball valve for a granular medium. The high-temperature metal hard sealing ball valve comprises a valve body, a ball body, a valve rod, a valve seat and a bottom cover, wherein the ball body is arranged in an internal chamber of the valve body; the valve rod which is connected with the ball body penetrates through a central through hole on the upper part of the valve body and extends out of the valve body; the bottom cover is positioned at the bottom of the valve body and comprises a bottom cover bottom plate and a bottom cover shaft; the bottom cover bottom plate is movably connected with the valve body; the bottom cover shaft penetrates through a through hole on the lower part of the valve body and is connected with the ball body in the chamber of the valve body; the ball body and the valve seat are respectively made of a metal material; the valve seat is arranged on the inner wall of the valve body, which is contacted with the ball body; a spring seat is arranged outside the valve seat; a disc spring is arranged in a groove between the spring seat and the valve seat; a pressing ring is arranged outside the spring seat and fixedly arranged on the spring seat through a screw; a four-piece ring with a sealing effect is arranged on a contact part of the spring seat, the pressing ring and the valve body; and an O-shaped ring is arranged in the groove between the valve seat and the valve body and made of fluororubber.
Description
Technical field
The utility model relates to a kind of ball valve, specifically, relates to a kind of particle media high-temperature metal hard-sealed ball valve.
Background technique
Ball valve is developed by cock, and its open-shut device utilizes spheroid to realize the purpose of opening and closing around the axis half-twist of valve rod as a spheroid.Ball valve is mainly used in cutting off, distributes and changes the media flow direction at pipeline, ball valve is simple in structure, good seal performance not only, and stimulate the menstrual flow in certain nominal that the scope inner volume is less, lightweight, material consumption is few, installation dimension is little, and driving moment is little, easy and simple to handle, easily realize that fast opening and closing, ball valve are in recent ten years one of valve kinds with fastest developing speed.Particularly in industrially developed country such as U.S., day, moral, method, meaning, west, English, the use of ball valve is very extensive, use kind and quantity still continuing expansion, and develop to high temperature, high pressure, large mouthful warp, high leak tightness, long lifetime, good adjusting function and a valve multifunctional direction, its reliability and other performance index all reach higher level, and part replaces gate valve, stop valve, throttle valve.Along with the technological progress of ball valve, predictable see in short-term in, particularly on the petroleum natural gas pipeline, on the oil refining cracking device and will have on the nuclear industry widely and use.In addition, the big-and-middle-sized bore in other industry, mesolow power field, one of valve types that ball valve also will become to take as the leading factor.
According to the difference of ball seat use material, ball valve is divided into soft sealing ball valve and hard seal ball valve.The most frequently used material of soft sealing ball valve valve seat is teflon and filled polytetrafluoroethylene, hard seal ball valve seat material common metal or pottery.
According to the difference of serviceability temperature, we usually are higher than 250 ℃ ball valve to serviceability temperature and call high-temperature ball valve.Because to can be used as ball valve soft seal valve seat macromolecular material kind under 250 ℃ of high temperature conditions very limited being higher than, so the valve seat of high-temperature ball valve generally adopts metal or ceramic making, i.e. hard seal form is often adopted in high-temperature ball valve sealing.
There are U.S. MOGAS company, VTI company, VOLK company, SST company, VELAN company, Japanese northern village company etc. in the dominant company that produces in the world at present high-temperature hard sealing ball valve.
Particle media is mainly used in the requirement that gasification, power plant, steel mill, aluminium manufacturer etc. carry the special medias such as steel ash, coal dust, silica flour and alumina powder with high-temperature metal hard-sealed ball valve.Wherein the application of Coal Gasification Technology has had the history in more than 30 year so far, and this technology has also had the application experience in more than 10 year in China, is at present domestic employed comparatively ripe Coal Gasification Technology.Along with the continuous intensification of domestic Chemical Industry, the production technology that water coal slurry pressure gasification is produced water gas is adopted in a large number.The coal water slurry gasification technological process is divided into pulping system, synthetic gas system, burner cooling system, lock hopper system, flash distillation and water treatment system etc.Coal water slurry gasification technique is under 1350 ℃, high temperature more than the 40MPa, condition of high voltage, makes water coal slurry and oxygen carry out redox reaction, makes coal partly become coal gas.Coal gas is made the saturated synthetic gas of water vapor and is sent through Quench water-bath, washing, dedusting, and in the coal the unburnt carbon of part and non-flammable ash content at high temperature to form slag broken through water cooling and dregs breaker, regularly enter slag bath by lock hopper.Whole production process not only exists high temperature, high pressure, inflammable, explosive gas medium and solid particle medium, also requires whole deslagging collection slag process to obey program control.In the lock hopper system, valve is for collection slag and deslagging cyclic process with characteristics such as high temperature, high pressure and high abrasions, and switching frequency is high and have tight seal under condition of high voltage.Because of relatively common hard seal ball valve, the water coal slurry operating mode will be applicable to the working conditions such as high temperature, high pressure, strong erosion, deep-etching with hard seal ball valve, has many technological difficulties in the Design and manufacture process.
Because that ball valve has is simple in structure, easy to operate, open and close rapidly characteristics, therefore many ball valve manufacturing enterprises do a lot in the exploitation of hard sealing thermal structure.The main occasion that high-temperature ball valve uses has Coal Chemical Industry system, metallurgical system, oil, power plant.Also be applicable to the mediums such as water, steam, oil product, nitric acid, acetic acid and urea.
In use, the main failure forms of metal hard-sealing ball valve is erosive wear.Although, can improve working life and the marresisttance energy of metal hard-sealing ball valve by methods such as surface heat processing or pile-up welding hard alloys, but still can not satisfy the requirement of special medias such as carrying steel ash, coal dust, silica flour and alumina powder.There is subject matter in high-temperature hard sealing ball valve at present:
(1) because the folded formula seal ring of multilayer soft or hard is fixed on the valve plate, medium forms the front to its sealing surface and washes away when the valve plate normally open, after the soft seal band in the tinsel interlayer is washed away, directly affects sealability.
(2) metal hard-sealing ball valve is subjected to this inadaptability in structure that limits of structural condition to be latus rectum DN200 with lower valve, and reason is that the valve plate overall structure is too thick, and flow resistance is large.
(3) because of the principle of three eccentric structures, the sealing surface of valve plate and the sealing between the valve seat are to lean on the moment of transmission device to make valve plate press to valve seat.During positive stream mode, more the high sealing extruding is tighter for pressure medium.Along with the increase valve plate of pressure medium and the unit positive pressure between the valve seat during less than medium pressure, sealing begins to leak when the runner medium counter flow.
The model utility content
The technical problems to be solved in the utility model is that the deficiency for prior art exists provides a kind of good sealing effect, the suitable particle media high-temperature metal hard-sealed ball valve that the Anti-erosion abrasiveness is strong.
The granular media high-temperature metal hard-sealed ball valve that the utility model provides, comprise valve body, spheroid, valve rod, valve seat and bottom, described spheroid is arranged in the chamber of valve inner, the valve rod that is used for this spheroid motion of drive that is connected with spheroid stretches out outside the valve body by valve body central upper portion through hole, bottom is positioned at the bottom of valve body, comprise bottom base plate and bottom axle, bottom base plate and valve body are flexibly connected, the bottom axle passes the through hole of valve body lower portion and is connected with spheroid in the valve chamber, described spheroid and valve seat are metallic material and make, valve seat is installed on valve inner and the contacted inwall of spheroid, wherein the valve seat arranged outside has spring seat, in the groove between spring seat and the valve seat belleville spring is installed, the spring seat arranged outside has trim ring, and described trim ring is fixedly mounted on the spring seat by screw, spring seat, trim ring and the contacted position of valve body three are provided with the pendant collet that seals, be provided with O type circle in the groove between valve seat and the valve body, the material of O type circle is fluorine rubber.
In another preference, the gap of described valve rod and valve body top through hole to lower and on be disposed with O type circle, thrust washer, sliding bearing, thrust bearing, spacer, Packing seat and filler, filler top is provided with Gland and banking stop, be provided with anti-static spring in the groove between valve rod and the Packing seat, be provided with pendant collet in the groove between Packing seat and the valve body top through-hole wall.
In another preference, the material of described thrust washer is teflon (PTFE), and described filler is graphite.
In another preference, the bottom axle is connected with spheroid by the mode in the groove that is installed on the spheroid bottom, and the gap between bottom axle and the spheroid bottom groove from bottom to top is disposed with thrust bearing and sliding bearing.
In another preference, in the front and back of described valve seat the scraping blade is arranged.
In another preference, described spheroid integral body is V-shaped.
In another preference, the metallic material of making spheroid and valve seat is cast steel, and the spherome surface surfacing has Ni-based WC, valve base sealing surface build-up welding officials Tai Lite alloy (STL alloy).
In another preference, spherome surface layer thickness is 0.5-0.8mm, and sealing surface of seat surface layer thickness is 0.5-0.8mm.
The granular media high-temperature metal hard-sealed ball valve that the utility model provides has following beneficial effect:
(1) employing butterfly spring collocation structure is outer, metal to metal seals firmly, special-shaped fluorine rubber seals soft seal, PTFE protective seal and greasing complementarity and seals five heavy valve seat combination sealing configurations.The structural material standardized designs of five resealing pairs, can freely change, can change different operating modes, different medium, the different temperatures such as oil, thermoelectricity ash disposal, oil refining coking, cracking for gasification, coal, select different combinations of materials, to reach best sealing effect and sealability; Keep in repair simultaneously, change conveniently.Because seal valve seat adopts standard and modular design, combination sealing technology, realized high sealing performance and the self-cleaning function of valve.Can guarantee high sealing performance, self-cleaning function is arranged again, prevent that impurity from damaging sealing pair.
(2) adopt combination brake switch and proporting rod seal technology, both had the auto-compensation polishing machine, can realize again safety on line maintenance with pressure, do not affect the normal operation of pipeline.
(3) adopt special processing technology, improve the machining accuracy of part, thereby improved the reliability of sealing.
(4) adopt the sealing pair pairing material, the selection of sealing pair material pairing is directly connected to performance, working life and the operation moment of torsion of valve.The pairing that the utility model adopts has been owing to adopted different pairing materials, and nickel-base alloy itself has high wear resistance and high-temperature behavior preferably, and valve base sealing surface build-up welding STL alloy-layer is thicker, and anti-bite is good.Be applicable to carry that corrosivity is strong, temperature is high and with the medium of the bad working environments such as the slurry of particle, powder.Also solved simultaneously owing to frequently opening the wearing and tearing that cause between the sealing surface.
(5) adopt spheroid supersonic speed spraying plating process, can form metal carbide ceramic coating at spherome surface, this coating and substrate combinating strength can reach 70MPa, porosity ratio＜2% has the structure of even compact, than the more complete characteristic that keeps hard phase WC, hardness＞1000HV, wear and corrosion behavior is good, and good mechanical mechanics property is arranged, and can significantly improve the usability of ball valve.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation that the utility model granular media is used high-temperature metal hard-sealed ball valve;
Fig. 2 is the enlarged diagram of I part among Fig. 1;
Fig. 3 is the enlarged diagram of II part among Fig. 1;
Fig. 4 is the structural representation that the utility model granular media is used the bottom of high-temperature metal hard-sealed ball valve
Fig. 5 is the structural representation that the utility model granular media is used the spheroid of high-temperature metal hard-sealed ball valve.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the utility model is further described:
Fig. 1 has illustrated granular media of the present utility model structure with high-temperature metal hard-sealed ball valve, this ball valve comprises valve body 1, spheroid 2, valve rod 3, valve seat 4 and bottom 5, described spheroid is arranged in the chamber of valve inner, the valve rod that is used for this spheroid motion of drive that is connected with spheroid stretches out outside the valve body by valve body central upper portion through hole, bottom is positioned at the bottom of valve body, comprise bottom base plate 51 and bottom axle 52, referring to Fig. 4.Bottom base plate and valve body are flexibly connected, and the bottom axle passes the through hole of valve body lower portion and is connected with spheroid 2 in the valve chamber, and described spheroid and valve seat are metallic material and make.Fig. 2 has illustrated the structure of valve seat part, valve seat 4 is installed on valve inner and the contacted inwall of spheroid, wherein the valve seat arranged outside has spring seat 6, belleville spring 7 is installed in the groove between spring seat and the valve seat, the spring seat arranged outside has trim ring 8, described trim ring is fixedly mounted on the spring seat by screw 9, spring seat, trim ring and the contacted position of valve body three are provided with the pendant collet 10 that seals, be provided with O type circle 11 in the groove between valve seat and the valve body, the material of O type circle is fluorine rubber.The mode that this ball valve adopts butterfly spring collocation structure, metal to metal hard sealing structure and special-shaped fluorine rubber sealing soft sealing structure to combine.Because seal valve seat adopts standard and modular design, combination sealing technology, realized high sealing performance and the self-cleaning function of valve.Can guarantee high sealing performance, self-cleaning function is arranged again, prevent that impurity from damaging sealing pair.
Fig. 1 has illustrated the structure of valve stem part in the lump in conjunction with Fig. 3, the gap of described valve rod and valve body top through hole to lower and on be disposed with O type circle 12, thrust washer 13, sliding bearing 14, thrust bearing 15, spacer 16, Packing seat 17 and filler 18, filler top is provided with Gland 19 and banking stop 20, be provided with anti-static spring 21 in the groove between valve rod and the Packing seat, be provided with pendant collet 22 in the groove between Packing seat and the valve body top through-hole wall.The material of described thrust washer is PTFE, and filler is graphite.This ball valve adopts combination brake switch and proporting rod seal technology; multinomial sealing technique and the elastic compensating sealing techniquies such as PTFE protective seal, O type circle, graphite have been adopted in the valve stem seal combination; both had the auto-compensation polishing machine, can realize again safety on line maintenance with pressure, do not affected the normal operation of pipeline.
In another embodiment of the present utility model, the bottom axle is connected with spheroid by the mode in the groove that is installed on the spheroid bottom, and the gap between bottom axle and the spheroid bottom groove from bottom to top is disposed with thrust bearing 23 and sliding bearing 24.
In another embodiment of the present utility model, scraping blade (not shown) is arranged in the front and back of described valve seat.The forward and backward design that all increases " scraping blade " at valve seat, can make valve in the process of opening or closing, the valve seat blade all plays scraping action to the spherome surface adsorbate, destroys sealing surface between the sealing pair thereby be unlikely to medium brought into, affects the sealability of integrated ball valve.
In another embodiment of the present utility model, described spheroid integral body is V-shaped, and Fig. 5 illustrates the shape of V-type spheroid.The ball valve of design forming V-shape opening also has good flow regulating function.
In another embodiment of the present utility model, the metallic material of making spheroid and valve seat is cast steel, and the spherome surface surfacing has Ni-based WC, and the valve base sealing surface build-up welding has the STL alloy.Spherome surface layer thickness is 0.5-0.8mm, and sealing surface of seat surface layer thickness is 0.5-0.8mm.Particle, the coal dust flowing velocity in pipeline is very fast, therefore require the ball seal face that higher hardness and intensity must be arranged, also require simultaneously sealing material and the body material of institute's surfacing that higher adhesive strength is arranged, and the intensity of body material itself is better, spray-welding coating just can not come off from matrix surface like this, thus the sealability of losing.The pairing that the utility model adopts has been owing to adopted different pairing materials, and nickel-base alloy itself has high wear resistance and high-temperature behavior preferably, and valve base sealing surface build-up welding STL alloy-layer is thicker, and anti-bite is good.Be applicable to carry that corrosivity is strong, temperature is high and with the medium of the bad working environments such as the slurry of particle, powder.Also solved simultaneously owing to frequently opening the wearing and tearing that cause between the sealing surface.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within the spirit and principle of this real model utility, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of model utility.
Claims (8)
1. particle media high-temperature metal hard-sealed ball valve, comprise valve body, spheroid, valve rod, valve seat and bottom, described spheroid is arranged in the chamber of valve inner, the valve rod that is used for this spheroid motion of drive that is connected with spheroid stretches out outside the valve body by valve body central upper portion through hole, bottom is positioned at the bottom of valve body, comprise bottom base plate and bottom axle, bottom base plate and valve body are flexibly connected, the bottom axle passes the through hole of valve body lower portion and is connected with spheroid in the valve chamber, described spheroid and valve seat are metallic material and make, valve seat is installed on valve inner and the contacted inwall of spheroid, it is characterized in that, the valve seat arranged outside has spring seat, in the groove between spring seat and the valve seat belleville spring is installed, and the spring seat arranged outside has trim ring, described trim ring is fixedly mounted on the spring seat by screw, spring seat, trim ring and the contacted position of valve body three are provided with the pendant collet that seals, and are provided with O type circle in the groove between valve seat and the valve body, and the material of O type circle is fluorine rubber.
2. high-temperature metal hard-sealed ball valve as claimed in claim 1, it is characterized in that, the gap of described valve rod and valve body top through hole to lower and on be disposed with O type circle, thrust washer, sliding bearing, thrust bearing, spacer, Packing seat and filler, filler top is provided with Gland and banking stop, be provided with anti-static spring in the groove between valve rod and the Packing seat, be provided with pendant collet in the groove between Packing seat and the valve body top through-hole wall.
3. high-temperature metal hard-sealed ball valve as claimed in claim 2 is characterized in that, the material of described thrust washer is teflon, and described filler is graphite.
4. high-temperature metal hard-sealed ball valve as claimed in claim 1, it is characterized in that, the bottom axle is connected with spheroid by the mode in the groove that is installed on the spheroid bottom, and the gap between bottom axle and the spheroid bottom groove from bottom to top is disposed with thrust bearing and sliding bearing.
5. high-temperature metal hard-sealed ball valve as claimed in claim 1 is characterized in that, is provided with the scraping blade in the front and back of described valve seat.
6. high-temperature metal hard-sealed ball valve as claimed in claim 1 is characterized in that, described spheroid integral body is V-shaped.
7. high-temperature metal hard-sealed ball valve as claimed in claim 1 is characterized in that, the metallic material of making spheroid and valve seat is cast steel, and the spherome surface surfacing has Ni-based WC, valve base sealing surface build-up welding officials Tai Lite alloy.
8. high-temperature metal hard-sealed ball valve as claimed in claim 7 is characterized in that, spherome surface layer thickness is 0.5-0.8mm, and sealing surface of seat surface layer thickness is 0.5-0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220169111 CN202659948U (en) | 2012-04-20 | 2012-04-20 | High-temperature metal hard sealing ball valve for granular medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220169111 CN202659948U (en) | 2012-04-20 | 2012-04-20 | High-temperature metal hard sealing ball valve for granular medium |
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| Publication Number | Publication Date |
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| CN202659948U true CN202659948U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201220169111 Withdrawn - After Issue CN202659948U (en) | 2012-04-20 | 2012-04-20 | High-temperature metal hard sealing ball valve for granular medium |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654202A (en) * | 2012-04-20 | 2012-09-05 | 浙江欧维克阀门有限公司 | High-temperature metal hard seal ball valve for granular media |
| CN103711931A (en) * | 2014-01-03 | 2014-04-09 | 浙江中德自控科技股份有限公司 | High-temperature and high-pressure composite material slagging ball valve assembly |
| CN104676030A (en) * | 2015-02-11 | 2015-06-03 | 宣达实业集团有限公司 | High-temperature wear-resistant type bidirectional hard-sealing slurry-blowing shear valve |
| CN105333172A (en) * | 2015-12-01 | 2016-02-17 | 超达阀门集团股份有限公司 | Anti-jammed and anti-blocking wearproof ball valve |
| CN109812596A (en) * | 2019-03-14 | 2019-05-28 | 无锡智能自控工程股份有限公司 | A kind of Fixed ball valve of the driven axle construction of separation type |
| CN110005868A (en) * | 2019-05-15 | 2019-07-12 | 苏州道森阀门有限公司 | A kind of underwater ball-valve valve rod combined sealing structure |
-
2012
- 2012-04-20 CN CN 201220169111 patent/CN202659948U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654202A (en) * | 2012-04-20 | 2012-09-05 | 浙江欧维克阀门有限公司 | High-temperature metal hard seal ball valve for granular media |
| CN102654202B (en) * | 2012-04-20 | 2016-08-10 | 欧维克集团有限公司 | High-temperature metal hard seal ball valve for granular media |
| CN103711931A (en) * | 2014-01-03 | 2014-04-09 | 浙江中德自控科技股份有限公司 | High-temperature and high-pressure composite material slagging ball valve assembly |
| CN103711931B (en) * | 2014-01-03 | 2016-01-13 | 浙江中德自控科技股份有限公司 | Combination material High Temperature High Pressure deslagging ball valve |
| CN104676030A (en) * | 2015-02-11 | 2015-06-03 | 宣达实业集团有限公司 | High-temperature wear-resistant type bidirectional hard-sealing slurry-blowing shear valve |
| CN105333172A (en) * | 2015-12-01 | 2016-02-17 | 超达阀门集团股份有限公司 | Anti-jammed and anti-blocking wearproof ball valve |
| CN109812596A (en) * | 2019-03-14 | 2019-05-28 | 无锡智能自控工程股份有限公司 | A kind of Fixed ball valve of the driven axle construction of separation type |
| CN110005868A (en) * | 2019-05-15 | 2019-07-12 | 苏州道森阀门有限公司 | A kind of underwater ball-valve valve rod combined sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130109 Effective date of abandoning: 20160810 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |