CN201836433U - High temperature ball valve - Google Patents
High temperature ball valve Download PDFInfo
- Publication number
- CN201836433U CN201836433U CN2010201463347U CN201020146334U CN201836433U CN 201836433 U CN201836433 U CN 201836433U CN 2010201463347 U CN2010201463347 U CN 2010201463347U CN 201020146334 U CN201020146334 U CN 201020146334U CN 201836433 U CN201836433 U CN 201836433U
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- valve seat
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- spheroid
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Abstract
The utility model discloses a high temperature ball valve comprising a valve body, a ball body inside the middle chamber of the valve body, a valve stem for driving the ball body to rotate, a soft valve seat mounted within the valve body, and a driving device mounted above the valve body, wherein the main body of the valve seat of the soft valve seat is provided with a plurality of inner ring grooves and outer ring grooves, the inner end surface of the main body of the valve seat is provided with an annular sealing member, the sealing surface of the sealing member matching with the sealing surface of the external circle of the ball body, thus constituting a seal pair, there being one or two soft valve seats which are arranged on side of an inlet of the middle chamber of the valve body or are respectively arranged on the side of the inlet and the side of an outlet of the middle chamber of the valve body, the lower end of the valve pole being connected to the ball body, while the upper end is disposed outside the valve body and is connected to the drive device, a heat insulation pad being arranged between a support which is on the valve body for mounting the driving apparatus and a mounting base of the driving device. Compared with prior art high temperature ball valve, the utility model is applicable to medium of higher temperature.
Description
Technical field
The utility model relates to a kind of high-temperature ball valve, and this high-temperature ball valve can be used for particularly high temperature media pipeline of various media.
Background technique
Referring to Fig. 2 (a) and Fig. 2 (b), existing common high-temperature ball valve comprises valve body, spheroid 40, valve seat 20 and valve rod 50, described spheroid is positioned at the lumen of described valve body, described valve seat is installed in the described valve body, quantity is one or two, be positioned at the import side of described lumen or lay respectively at the suction side and the outlet side of described lumen, direct or the advancing of the lumen of described valve body by medium channel on the valve seat and valve body, outlet is interconnected, form the medium channel of described valve, the inboard of described valve seat is provided with the Sealing 41 of annular, sealing surface on sealing surface on the described spheroid and the described Sealing cooperatively interacts, constitute the sealing pair of valve, described valve rod is used to drive spheroid and rotates, described valve rod passes the bonnet of described valve body, one end connects described spheroid, the other end connects mechanical actuation device and/or manual driving device 90, can be furnished with the handwheel 91 that is used for manual drives on the described drive unit, described valve body by valve body main body 11 and be installed on the described valve body main body on, down, a left side, right four valve gaps are formed, described bonnet is provided with the valve-rod cavity that passes for described valve rod, be provided with in the described valve-rod cavity and be used to fill the stuffing box 61 of sealing with filler, described filler is filled between described valve rod and the described valve-rod cavity side, formation is to the sealing in gap between valve rod and the valve-rod cavity sidewall, be connected with gland 62 on the described stuffing box, so that compress filler.Be provided with support 70 above the described bonnet, described drive unit is installed on the described support.When described drive unit drove described valve rod and rotates, described spheroid also together rotated with described valve rod, changed thus and the working state of control valve.
Described valve seat under the prior art by valve seat I 26, valve seat II 27, spring 28 and be arranged on described valve seat I, valve seat II and valve gap (valve body) between valve seat insert 21 form, axially there are gap VI 24 in described valve seat I and valve seat II, radially there is gap V23, having gap VI 22 between described valve seat insert and the valve seat II.The size of described gap VI and even whether exist the spring force size that is applied on the described valve seat II with described spring relevant, when described spring force is very big, described valve seat I and valve seat II closely force together, in fact described gap VI does not exist, when described spring force is moderate, described gap VI is less, when described spring force hour, described gap VI is bigger.Described Sealing is arranged on the described valve seat I ringwise, and the cylindrical sealing surface of its sealing surface and described spheroid is formed the sealing pair of valve.When valve closing, under the effect of spring force, valve seat II is pressed on the valve seat insert, valve seat insert is pressed between valve seat I and the valve body in the gap, stoped medium to spill out from gap between valve seat I and the valve body, simultaneously because valve seat I the right medium lifting surface area is big, left side medium lifting surface area is little, described valve seat I moves to described spheroid direction under the pressure medium effect, and then be pressed on the described spheroid, make the gap of sealing pair trend towards zero thus, stoped the import medium to flow out from the sealing pair gap.
A major defect of this valve is: because the elasticity temperature influence of spring, when medium temperature is elevated to certain value, spring force can drop to a certain value, therefore when valve closing, because the decline of spring force, cause between valve seat I and the seal ring, extruding force between seal ring and the valve body descends, the medium that inlet has certain pressure flows into described valve seat insert gap on every side, and then flow into the lumen of valve body through gap between valve seat I and the valve body, the formation medium is revealed, because this medium is revealed, and causes the pressure medium at valve inlet place to be unable to lift, and can not form enough pressure to valve seat I, also just can not form the enough pressure between the sealing pair, can't form effective seal, medium can constantly be revealed away between sealing pair, causes valve invalidation thus.Because under the prior art background, the material that is used as spring can only be adapted to 550 ℃ of temperature once usually, when medium is higher than 550 ℃, the problem of sealing pair leakage, valve invalidation will appear making inadequately because of spring force.
Another major defect of this valve is: because valve body and support all are heat conduction, when medium temperature is higher, can cause the temperature rise of drive unit by the conduction effect of valve body and support, because drive unit is non-refractory normally, therefore with this valve applications in high temperature media, be easy to make drive unit to lose efficacy because of overheated.
The model utility content
In order to address the above problem, the utility model provides a kind of high-temperature ball valve, and this ball valve is not prone to the sealing pair inefficacy under high temperature media and drive unit lost efficacy, and compares with prior art, can be adapted to higher medium temperature.
The technological scheme that the utility model adopted is: a kind of high-temperature ball valve, comprise valve body, be positioned at the spheroid of valve body lumen, be used to drive the valve rod that spheroid rotates, the drive unit that is installed in the gentle valve seat in the described valve body and is installed in the valve body top, described gentle valve seat comprises the valve seat body that is provided with center through hole, be respectively equipped with some inner grooves and outer groove on the inner and outer wall of described valve seat body, the interior edge face of described valve seat body is provided with the Sealing of annular, sealing surface on the described Sealing and described spheroid cylindrical sealing surface mate mutually, constitute the sealing pair of valve, the quantity of described gentle valve seat is one or two, be positioned at the suction side of described valve body lumen or lay respectively at the suction side and the outlet side of described valve body lumen, described valve rod passes the top of described valve body and is connected with described valve body rotary seal, the lower end of described valve rod is connected with described spheroid, the upper end is positioned at outside the described valve body, connect described drive unit, the top of described valve body is provided with the support that is used to install described drive unit, is provided with thermal insulating pad between the mounting base of described support and described drive unit.
Working principle of the present utility model is: parts such as the valve seat body of gentle valve seat and positioning block can adopt the high metal or alloy material of limit of elasticity to make, and make gentle valve seat have required elasticity thus, can compress during pressurized, can elongate during tension.Cooperate by suitable size, during assembling the sealing pair that is made of spheroid and Sealing formed and have fixed pretightening force, so that under the valve closing state, valve seat body moderately is pressed on Sealing on the spheroid.During throttle down, drive unit work, drive valve rod, spheroid rotates, make medium channel center line and the medium channel center line on the valve seat on the spheroid perpendicular, entity part on the spheroid is blocked the medium channel on the valve seat, the cylindrical sealing surface of spheroid and the sealing surface of Sealing are in contact with one another under the effect of pretightening force and are compacted to a certain extent, medium is obstructed during by sealing pair, the static pressure of entrance point is recovered to a certain extent, simultaneously, because the medium of entrance point basically can the inflow of non-resistance ground and is full of the inner groove of valve seat body or the gap between inner groove and the interior positioning block, valve seat body is exerted pressure, and make inner groove or inner groove with the gap enlargement between the interior positioning block, make the interior edge face of valve seat body move thus towards the spheroid direction, promote Sealing and press to spheroid, make the extruding force between the sealing pair reach certain value, form reliable and effective seal.
When medium temperature is elevated to the elastic force that influences valve seat body, although imposing on the pretightening force of Sealing, valve seat body descends, but when valve closing, still can form certain resistance by sealing pair to medium, do not hinder simultaneously the medium inflow and be full of the inner groove of valve seat body or the gap between inner groove and the interior positioning block, because medium can't be leaked to lumen between valve seat body and valve body, therefore the pressure medium that has kept suction side, because the degree of high temperature lower valve base main body and inner groove compressive deformation is bigger, more help to impel the interior edge face of valve seat body to move to the spheroid direction, guarantee extruding force enough between the sealing pair, formed reliable and effective seal.Simultaneously, the contour projector that valve causes because of expanding with heat and contract with cold can be cushioned by corresponding each gap, has avoided occurring between valve seat body and spheroid too high pressure, therefore can be not stuck between valve two valve seats ball body of valve because of expanding with heat and contract with cold.
The beneficial effects of the utility model are: owing to adopted the gentle valve seat of above-mentioned special construction, guaranteed still can realize reliable and effective seal at the high temperature media lower valve; Owing between the mounting base of support and drive unit, be provided with thermal insulating pad, isolated the heat transfer of high temperature media to a great extent to drive unit, avoided the mistake high temperature rise of drive unit, guaranteed that drive unit did not lose efficacy because of high temperature media.Therefore, compare with the high-temperature ball valve under the prior art, the utility model can be adapted to the medium of higher temperature.
Description of drawings
Fig. 1 (a) is the schematic representation of gentle valve seat high-temperature ball valve of the present utility model;
Fig. 1 (b) is for relating to the local enlarged diagram A of gentle valve seat and valve seal pair among Fig. 1 (a);
Fig. 2 (a) is the schematic representation of the high-temperature ball valve under the prior art;
Fig. 2 (b) for Fig. 2 (a) in relate to the local enlarged diagram B of valve seat and valve seal pair.
Embodiment
Referring to Fig. 1 (a) and (b), the high-temperature ball valve that the utility model provides comprises valve body, be positioned at the spheroid 40 of valve body lumen, be used to drive the valve rod 50 that spheroid rotates, the drive unit 90 that is installed in the gentle valve seat 30 in the described valve body and is installed in the valve body top, described gentle valve seat comprises the valve seat body 31 that is provided with center through hole, be respectively equipped with some inner grooves and outer groove on the inner and outer wall of described valve seat body, the interior edge face of described valve seat body is provided with the Sealing 41 of annular, sealing surface on the described Sealing and described spheroid cylindrical sealing surface mate mutually, constitute the sealing pair of valve, the quantity of described gentle valve seat is one or two, be positioned at the suction side of described valve body lumen or lay respectively at the suction side and the outlet side of described valve body lumen, described valve rod passes the top of described valve body and is connected with described valve body rotary seal, the lower end of described valve rod is connected with described spheroid, the upper end is positioned at outside the described valve body, connect described drive unit, the top of described valve body is provided with the support 70 that is used to install described drive unit, is provided with thermal insulating pad 80 between the mounting base of described support and described drive unit.Owing to be provided with inner groove and outer groove on the valve seat body of described gentle valve seat, when valve seat body is expanded with heat and contract with cold because of temperature variation, inner groove and outer groove are formed extruding, variation by the inner and outer rings well width, can reduce or cushion the dimensional changes brought because of expanding with heat and contract with cold and, guarantee the proper functioning of sealing seat and valve the valve adverse effect.
Usually, described some inner grooves and described some outer grooves can be alternately distributed, and groove depth is all greater than half of the wall thickness of described valve seat body.For example as a kind of preferred scheme, the groove depth scope of described inner groove and outer groove can be the 65-85% of the wall thickness of described valve seat body, for example 65%, 75%, 85% or the like.This structure and size are combined with to be beneficial to and improve the buffer function that inside and outside annular groove expands with heat and contract with cold to valve seat body.
The quantity of described inner groove and outer groove is preferably a plurality of usually, and both quantity equates or differ one, guarantees thus to be equipped with between two adjacent inner grooves between an outer groove, adjacent two outer grooves also to be equipped with an inner groove.
Positioning block 32 and outside fix piece 33 in can being equipped with respectively in the described inner groove and in the described outer groove all adopt the width of broad to allow inside and outside annular groove in proof strength, simplify the structure of valve seat body, convenient processing.Positioning block and outside fix piece are formed ringwise or by a plurality of fritters that are arranged in annular in described, positioning block and the outside fix piece thickness everywhere width on the relevant position less than corresponding inner groove and outer groove respectively usually in described, so that between positioning block and corresponding annular groove, form corresponding gap II35 and gap III36, to be used to cushion overall dimensions variation and the permission medium inflow inner groove that expands with heat and contract with cold and cause, the big I in these gaps is determined according to the breathing amount of each part under the Environmental Conditions, should avoid because of the gap too small in the breathing process that spheroid is stuck, simultaneously should be not excessive yet, to help guaranteeing bulk strength.
The preferred rectangle of the sectional shape of described inner groove and outer groove, correspondingly, the sectional shape of positioning block and outside fix piece also all can be preferably and the rectangle that adapts of the sectional shape of described inner groove and outer groove in described, this shape helps improving the buffer function to breathing, and help keeping suction side medium pressure to valve seat body under the valve closing state, improve sealability, and help manufacturing.
The interior edge face of described valve seat body can be the sphere shape of inverted cone surface shape or indent usually, so that adapt with the shape of spheroid cylindrical sealing surface.
Usually can be with in one in the center through hole of described valve seat body and manage 37, described in the external diameter of pipe should be less than the diameter of the center through hole of described valve seat body, so that in interior pipe and valve seat body, form the gap I34 that allows medium to flow between the circle.Described gap I is communicated with gap II and gap III, and medium can flow into gap II and gap III by gap I thus.By interior pipe is set, the plurality of small blocks of positioning block in forming can be limited in the inner groove.
Usually, the endoporus of described some interior positioning blocks should be consistent with the center through hole of described valve seat body or smaller, center through hole with described valve seat body together constitutes a through hole that inwall is level and smooth thus, therefore, be provided with described under the situation of pipe, described some positioning blocks also with described valve seat body equally be enclosed within described in the outside of pipe.
When be provided with described in when pipe, described in the through hole of pipe constitute medium channel on the valve seat.When managing in not establishing, the center through hole that then can directly adopt described valve seat body is as corresponding medium channel.
Described Sealing is the projection on the described valve seat body interior edge face.
Described Sealing can be built-up welding one deck wear-resistant temperature-resistant material on described valve seat body interior edge face, adopt the machining mode on this wear-resistant temperature-resistant material layer, to cut the sealing surface that cooperates with described spheroid outer spherical surface, this wear-resistant temperature-resistant material layer after the processing has constituted described Sealing, the form of this Sealing helps simplified structure, convenient processing.
Described Sealing also can be the Sealing finished product that processes separately, is installed on the valve seat body interior edge face by machinery.
The sealing surface of described Sealing can be the sphere that matches with described outer surface of spheroid, also can be the conical surface that described outer surface of spheroid matches, and it and spheroid outer spherical surface form sealing pair.
Since interior pipe only with the contacts side surfaces of Sealing, therefore in pipe breathing in the axial direction can not influence the position of Sealing, just do not need to be provided on inner pipe having cushioned the structure of breathing yet.
Usually, described valve body comprises valve body main body 11 and four valve gaps 12 in upper and lower, left and right that are fixedly mounted on the described valve body main body.
The outer end of described left and right valve gap all can be provided with flange, and these flanges have constituted the mounting flange of described ball valve.
Described valve body main body is with adopting the flange mode to connect between the described left and right valve gap.
The mounting type of the valve seat body of described gentle valve seat in described valve body is: described valve seat body is installed on the corresponding valve gap usually, the installation aperture that the external diameter of setting and this valve seat body is complementary on the inwall of corresponding valve gap, the outer end in described installation aperture is provided with the annular stop step by modes such as reducings, the mode of described valve seat body by Spielpassung is inlaid in the described installation aperture, so that the breathing of valve seat body.In case of necessity, can also by weld 38 or mode such as bonding the outer end and the valve gap of valve seat body is fixed together.
When in described gentle valve seat is provided with, managing, the outer end (promptly extending outward one section from described valve seat body outer end) of described valve seat body can be longer than in the outer end of pipe in described, the outer end in described installation aperture also is provided with one section interior pipe with described interior external diameter of pipe coupling the aperture is installed, the part that pipe extends outward from described valve seat body outer end in described insert described in pipe install in the aperture, in case of necessity can also by weld 39 or modes such as bonding be fixed.
Usually, the gentle valve seat quantity of this gentle valve seat high-temperature ball valve setting is two, and (medium turnover direction) symmetric mode distributes about employing, and described valve body, spheroid and valve rod also adopt symmetrical structure, the valve of Xing Chenging is a two way valve thus, and any direction all can connect inlet pipeline.According to the above-mentioned explanation of this specification, what seal in the reality mainly is the suction side sealing pair.
Usually on described bonnet, be provided with the valve-rod cavity that is used to pass described valve rod, be provided with in the described valve-rod cavity and be used to fill the stuffing box 61 of sealing with filler, described filler is filled between described valve rod and the described valve-rod cavity side, formation is to the sealing in gap between valve rod and the valve-rod cavity sidewall, the upper end of described valve-rod cavity is connected with gland 62, the central authorities of described gland are provided with for described valve rod and pass through hole, and the lower end of described gland is positioned at described stuffing box, is pressed on the described filler.By turn gland, can regulate pressure, to improve the sealing effect of filler to filler.
The top of described bonnet can be a mounting disc that is used to install described drive unit usually, described thermal insulating pad is laid in the described mounting disc, the mounting base of described drive unit is fixedly connected in the described mounting disc by modes such as bolts, described thermal insulating pad is between described mounting disc and described mounting base, to obtain corresponding effect of heat insulation.
Described drive unit can be Vidacare corp or other mechanical actuation devices usually, also can be manual driving device.Particularly, described Vidacare corp or other mechanical actuation devices preferably are provided with handwheel and realize Vidacare corp or other mechanical actuation devices that handwheel drives, so that carry out manual drives under situations such as power failure or Mechanical Driven inefficacy.
This specification described some be meant one or more.
This specification described " interior ", " outward " are relative concepts, when relating to the axial direction of valve seat, so that the time spent is " interior " towards the direction of spheroid or the position of nearly spheroid, when relating to the radial direction of valve seat, being " interior " towards the direction of axis or the position of axial ray, for example, the interior edge face of described valve seat body is installed the end face of back towards the spheroid end for it, and the inward flange of the interior edge face of described valve seat body is to constitute the border of described valve seat body center through hole or the edge of the described valve seat body center through hole of adjacency on this interior edge face.
Claims (10)
1. high-temperature ball valve, comprise valve body, be positioned at the spheroid of valve body lumen, be used to drive the valve rod of spheroid rotation and the drive unit that is installed in the valve body top, it is characterized in that also comprising the gentle valve seat that is installed in the described valve body, described gentle valve seat comprises the valve seat body that is provided with center through hole, be respectively equipped with some inner grooves and outer groove on the inner and outer wall of described valve seat body, the interior edge face of described valve seat body is provided with the Sealing of annular, sealing surface on the described Sealing and described spheroid cylindrical sealing surface mate mutually, constitute the sealing pair of valve, the quantity of described gentle valve seat is one or two, be positioned at the suction side of described valve body lumen or lay respectively at the suction side and the outlet side of described valve body lumen, described valve rod passes the top of described valve body and is connected with described valve body rotary seal, the lower end of described valve rod is connected with described spheroid, the upper end is positioned at outside the described valve body, connect described drive unit, the top of described valve body is provided with the support that is used to install described drive unit, is provided with thermal insulating pad between the mounting base of described support and described drive unit.
2. high-temperature ball valve as claimed in claim 1, it is characterized in that described some inner grooves and described some outer grooves are alternately distributed, groove depth is all greater than the wall thickness of described valve seat body half, and the quantity of described inner groove and the quantity of described outer groove are a plurality of, and both equate or differ one.
3. high-temperature ball valve as claimed in claim 2, positioning block and outside fix piece in it is characterized in that being equipped with respectively in the described inner groove and in the described outer groove, described interior positioning block and outside fix piece thickness everywhere is the width on the relevant position less than corresponding inner groove and outer groove respectively, and described interior positioning block and outside fix piece are formed ringwise or by a plurality of fritters that are arranged in annular.
4. high-temperature ball valve as claimed in claim 3 is characterized in that the sectional shape of described inner groove and outer groove is rectangle, described in the sectional shape of positioning block and outside fix piece be the rectangle that the sectional shape with described inner groove and outer groove adapts.
5. high-temperature ball valve as claimed in claim 4 is characterized in that being with in the center through hole of described valve seat body pipe in, described in the external diameter of pipe less than the diameter of the center through hole of described valve seat body, described in positioning block be enclosed within described in the outside of pipe.
6. high-temperature ball valve as claimed in claim 5, it is characterized in that described Sealing is the projection on the inner end face of described valve seat body, adopt following any one mode to form: (1) is built-up welding one deck wear-resistant temperature-resistant material on the interior edge face of described valve seat body, adopts the machining mode to cut the sealing surface that cooperates with described spheroid outer spherical surface on this wear-resistant temperature-resistant material layer; (2) adopt the Sealing finished product that processes separately, be installed in by machinery on the main body interior edge face of described valve seat, the sealing surface of described Sealing is the sphere or the conical surface that matches with described outer surface of spheroid, forms sealing pair with the outer spherical surface of described spheroid.
7. as claim 1,2,3,4,5 or 6 described high-temperature ball valves, it is characterized in that described valve body comprise the valve body main body and be fixedly mounted on the described valve body main body on, down, a left side, right four valve gaps, a described left side, the outer end of right valve gap is equipped with flange, the mounting type of the valve seat body of described gentle valve seat in described valve body is: described valve seat body is installed on the corresponding valve gap, the installation aperture that the external diameter of setting and this valve seat body is complementary on the inwall of corresponding valve gap, the outer end in described installation aperture is provided with the annular stop step by modes such as reducings, and described valve seat body is inlaid in the described installation aperture by the mode of Spielpassung.
8. high-temperature ball valve as claimed in claim 7, the quantity that it is characterized in that described gentle valve seat are two, adopt the bilateral symmetry mode to distribute, and described valve body, spheroid and valve rod also adopt symmetrical structure.
9. high-temperature ball valve as claimed in claim 8, the top that it is characterized in that described bonnet is a mounting disc that is used to install described drive unit, described thermal insulating pad is laid in the described mounting disc, and the mounting base of described drive unit is fixedly connected in the described mounting disc.
10. high-temperature ball valve as claimed in claim 9, it is characterized in that described drive unit is Vidacare corp or manual driving device, described electric driver is to be provided with handwheel and to realize the mechanical actuation device that handwheel drives, described bonnet is provided with the valve-rod cavity that is used to pass described valve rod, be provided with in the described valve-rod cavity and be used to fill the stuffing box of sealing with filler, described filler is filled between described valve rod and the described valve-rod cavity side, formation is to the sealing in gap between valve rod and the valve-rod cavity sidewall, the upper end of described valve-rod cavity is connected with gland, the central authorities of described gland are provided with the through hole that passes for described valve rod, the lower end of described gland is positioned at described stuffing box, is pressed on the described filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201463347U CN201836433U (en) | 2010-03-31 | 2010-03-31 | High temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201463347U CN201836433U (en) | 2010-03-31 | 2010-03-31 | High temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201836433U true CN201836433U (en) | 2011-05-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201463347U Expired - Fee Related CN201836433U (en) | 2010-03-31 | 2010-03-31 | High temperature ball valve |
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| CN (1) | CN201836433U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287612A (en) * | 2011-05-23 | 2011-12-21 | 浙江宏明阀门有限公司 | Ultra supercritical hydrophobic valve |
| CN104728464A (en) * | 2013-12-19 | 2015-06-24 | 江苏圣业阀门有限公司 | Stop valve for high-temperature, -pressure and -speed gas flow |
| CN104879521A (en) * | 2015-06-12 | 2015-09-02 | 浙江成高阀门有限公司 | Wear-resisting ball valve for slurry and dust |
-
2010
- 2010-03-31 CN CN2010201463347U patent/CN201836433U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287612A (en) * | 2011-05-23 | 2011-12-21 | 浙江宏明阀门有限公司 | Ultra supercritical hydrophobic valve |
| CN104728464A (en) * | 2013-12-19 | 2015-06-24 | 江苏圣业阀门有限公司 | Stop valve for high-temperature, -pressure and -speed gas flow |
| CN104879521A (en) * | 2015-06-12 | 2015-09-02 | 浙江成高阀门有限公司 | Wear-resisting ball valve for slurry and dust |
| CN104879521B (en) * | 2015-06-12 | 2018-12-11 | 浙江成高阀门有限公司 | Slurry dust wear resistance ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20120331 |