CN202719190U - Double block and bleed valve with function of discharging - Google Patents
Double block and bleed valve with function of discharging Download PDFInfo
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- CN202719190U CN202719190U CN201220435235.XU CN201220435235U CN202719190U CN 202719190 U CN202719190 U CN 202719190U CN 201220435235 U CN201220435235 U CN 201220435235U CN 202719190 U CN202719190 U CN 202719190U
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- slide plate
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Abstract
The utility model relates to the technical field of valve manufacturing, in particular to a double block and bleed valve with a function of discharging. The double block and bleed valve with the function of discharging is characterized in that a valve core is arranged inside a valve body, and sliding vanes are arranged on two sides of the valve core. A valve bottom is arranged below the valve body, and a discharge valve is arranged in the middle of the valve body. The upper portion of a valve cover is connected with a valve rod through a support frame, and a thread sleeve is arranged outside the valve rod. A shifting pin is arranged between the valve rod and the thread sleeve, and feather keys are arranged on the thread sleeve and on the support frame. Padding is arranged above the valve cover, and a padding pressing sleeve is arranged above the padding. A padding pressing cover is arranged on the padding pressing sleeve, and a guide cover and an O-shaped ring are arranged at the connection position of a driving device and an indicating rod. Compared with the prior art, the double block and bleed valve with the function of discharging is small in flow resistance coefficient of media, large in flow area and good in sealing property and safety, can bear a larger load, and lowers the maintenance cost. A valve inner cavity has the performance of corrosion resisting, erosion resisting, wear resisting and corrosion resisting. A metal sealing surface has the performance of corrosion resisting, erosion resisting, wear resisting and corrosion resisting. The valve core, an upper shaft and a lower shaft are tarnishing resistant and corrosion resistant.
Description
[technical field]
The utility model relates to technical field of valve manufacturing, specifically a kind of having a double meaning double break valve with drainage function.
[background technique]
Ubiquitous two problems of common valve:
One, sealing surface friction, wearing and tearing.The valve body of common valve and valve gap adopt independent gasket seal, if pad damages or other factors, valve easily leaks outside, and brings potential safety hazard in the use.
Its two, S shape guide groove structure, its operating principle are the starting stage of spool to do straight line motion, then both moving linearly of spool rotates again, this shaping-orientation key bears huge shearing force, and the intensity of feather key is had very high requirement; And spool need design larger stroke, otherwise easily causes the wearing and tearing of soft sealing face and valve body sealing surface, and operational torque is increased, and shorten the working life of valve.Therefore, there is fatal design shortcoming in " S " type guide structure.
Having a double meaning double break function valve improves at the common valve architecture basics, because it has following characteristic, and is widely used on the pipelines such as aviation kerosine, light oil, rock gas, liquid gas, piped gas, chemical medium, as the ideal device that blocks medium.
(1) valve is in switching process, and valve body sealing surface and slide plate sealing surface are without any contacting, and therefore, sealing surface is without the long service life of friction, wearing and tearing, valve, and switch moment is little;
(2) valve does not need valve is pulled down from pipeline when maintenance, only needs the valve bottom is taken apart, changes a pair of slide plate and gets final product, and keeps in repair very convenient;
(3) valve body and cock are undergauge, can alleviate cost;
(4) body cavity is coated with hard chrome, and sealing area is hard smooth;
(5) elastic packing on the slide plate adopts fluorine rubber, and compression molding is in the slide plate surface grooves.Has the sealing of metal to metal of fire-proof function as the backing of elastic packing;
(6) valve has automatic discharge device, after valve is closed fully, prevents that valve pocket from unusually boosting and check the effect of valve;
(7) valve switch indicator and the switching position are synchronous, can accurately show the on off state of valve.
Such as the disclosed a kind of having a double meaning disconnected zero-leakage valve of domestic patent CN201487253U, comprise valve body, cock, the slide plate that is arranged on the cock left and right sides, bearing in the valve body, this device adopts L-type groove guide rail structure, adopt elastic packing and metal sealing double sealing structure, and be provided with filler, Gland and filler pressing sleeve realization zero leakage function in conjunction with the valve gap top.
The disclosed a kind of having a double meaning double break valve of domestic patent CN201982688U and for example, comprise valve body, cock, the sealing slide plate, valve rod and operation equipment, the cock that is provided with in the valve body, valve rod and operation equipment, the annular seal groove that the surface of contact of the import and export section of sealing slide plate and valve inner is provided with about utilization, reach sealing effect in conjunction with the elastic seal ring in the sealing groove, this device moves up and down cock by the operation equipment with lifting and spinfunction first in the valve switch process, so between cock its sealing surface of when rotation and the slide plate sealing surface without any contacting, therefore sealing surface is without friction, wearing and tearing, the long service life of valve, switch moment is little.
But above-mentioned two kinds of valve function are single, and drainage function is not arranged.
[summary of the invention]
The purpose of this utility model is to overcome the deficiency of common valve, improves on the basis of existing having a double meaning double break valve mechanism, and a kind of novel structure is provided, and uses safety, and has simultaneously having a double meaning double break and drainage function valve.
For achieving the above object, design a kind of having a double meaning double break valve with drainage function, comprise valve body 1, at the bottom of the valve 2, blowdown valve 3, slide plate 4, spool 5, valve gap 6, filler 7, filler pressing sleeve 8, Gland 9, support 10, valve rod 11, drive unit 12, guide cover 13, O shape circle 14, indicator 15, indicating arm 16, blind patch 17, bleeder valve 20, swivel nut 22, finger 23 and feather key 24, it is characterized in that valve body 1 left and right sides is provided with medium and imports and exports, be provided with spool 5 in the valve body 1, the spool both sides are equipped with slide plate 4, valve body 1 below is provided with at the bottom of the valve 2, the valve body middle part is provided with bleeder valve 20, valve body 1 top is connected with valve gap 6, valve gap 6 tops are connected with valve rod 11 by support 10, valve rod 11 outsides are provided with swivel nut 22, be provided with finger 23 between valve rod 11 and the swivel nut 22, swivel nut 22 is provided with feather key 24 with support 10, the support both sides are provided with blind patch 17, valve gap 6 tops are provided with filler 7, the filler top is provided with filler pressing sleeve 8, filler pressing sleeve 8 tops are provided with Gland 9, valve rod 11 tops are connected with drive unit 12, drive unit 12 tops are provided with indicating arm 16 and indicator 15 successively, and drive unit 12 is provided with guide cover 13 and O shape circle 14 with indicating arm 16 joints.
Be provided with finger 23 between described valve rod 11 and the swivel nut 22.
Described swivel nut 22 is provided with feather key 24 with support 10.
Described slide plate adopts guide-rail structure with being connected of spool.
Described swivel nut 22 adopts L shaped groove structure.
Described valve rod adopts double end or bull to be connected with swivel nut.
Described valve adopts double sealing structure, and described double sealing structure is elastic packing and metal sealing; In the groove of elastic seal ring on the slide plate by compression molding embedding sealing slide plate, and through post-cure, along with the movement of sealing slide plate to sealed at both ends of valve body, elastic seal ring is pressed in the groove gradually, and the slide plate metal surface that this moment is machined and the metallic sealing section at valve body two ends form the sealing of secondary metal to metal.
The utility model compared with prior art, the flow resistance coefficient of medium is little, circulation area is large, sealing surface is without friction, and wearing and tearing abrade, the valve long service life, good seal performance can not produce leakage, Security is good, function with check internal leakage, valve lumen overpressure relief, the operating structure gear drive itself has self-locking performance, screw thread is medium-sized trapezoidal thread, can bear larger load.This valve has the function of on-line maintenance, has reduced maintenance cost.Body cavity has corrosion-resistant, and resistance to erosion is wear-resistant, anti-attached performance, and metallic sealing section has corrosion-resistant, and resistance to erosion is wear-resistant, anti-attached performance, the spool corrosion resistant, corrosion-resistant.After the valve rod processing, swivel nut bite-resistant and wear-resistant performance have been improved in surface hardness HV 〉=900, and abrasion resistance properties has been improved in swivel nut HRC 〉=45, has guaranteed that the guiding bond energy is free to slide in guiding groove.
[description of drawings]
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the utility model embodiment flange connects the having a double meaning double break of full-bore and drainage function valve mechanism schematic diagram;
Fig. 3 is the utility model L-type guide structure schematic diagram;
Appointment Fig. 1 is Figure of abstract.
1 valve body among Fig. 1, at the bottom of 2 valves, 3 blowdown valves, 4 slide plates, 5 spools, 6 valve gaps, 7 fillers, 8 filler pressing sleeves, 9 Glands, 10 supports, 11 valve rods, 12 drive units, 13 guide covers, 14 O type circles, 15 indicators, 16 indicating arms, 17 blind patch, 20 bleeder valves, 22 swivel nuts, 23 fingers, 24 feather keys.
[embodiment]
By reference to the accompanying drawings the utility model is further elaborated, the shape of this device, structure and method can realize the technician of this professional skill field.
The utility model is on the basis of common valve structure, improve guide groove structure and sealing configuration, designed L-type groove structure and substituted existing S type guide structure, adopt elastic packing and metal sealing double seal, by transfer seal friction position, improve the sealing surface life-span.
Concrete project organization as shown in Figure 1, comprise valve body 1, at the bottom of the valve 2, blowdown valve 3, slide plate 4, spool 5, valve gap 6, filler 7, filler pressing sleeve 8, Gland 9, support 10, valve rod 11, drive unit 12, guide cover 13, O shape circle 14, indicator 15, indicating arm 16, blind patch 17, bleeder valve 20, swivel nut 22, finger 23 and feather key 24, it is characterized in that valve body 1 left and right sides is provided with medium and imports and exports, be provided with spool 5 in the valve body 1, the spool both sides are equipped with slide plate 4, valve body 1 below is provided with at the bottom of the valve 2, the valve body middle part is provided with bleeder valve 20, valve body 1 top is connected with valve gap 6, valve gap 6 tops are connected with valve rod 11 by support 10, valve rod 11 outsides are provided with swivel nut 22, be provided with finger 23 between valve rod 11 and the swivel nut 22, swivel nut 22 is provided with feather key 24 with support 10, the support both sides are provided with blind patch 17, valve gap 6 tops are provided with filler 7, the filler top is provided with filler pressing sleeve 8, filler pressing sleeve 8 tops are provided with Gland 9, valve rod 11 tops are connected with drive unit 12, drive unit 12 tops are provided with indicating arm 16 and indicator 15 successively, drive unit 12 is provided with guide cover 13 and O shape circle 14 with indicating arm 16 joints, be provided with finger 23 between valve rod 11 and the swivel nut 22, described swivel nut 22 is provided with feather key 24 with support 10, slide plate adopts guide-rail structure with being connected of spool, swivel nut 22 adopts L shaped groove structure, and valve rod adopts double end or bull to be connected with swivel nut.
Its operating structure (swivel nut) adopts unique " L " type groove structure, as shown in Figure 3, with axis traveling priority and the half-twist of spool, rotatablely move separately, make valve operation flexible, light.A-B is straight section among the figure, and B-C is 90 ° of rotating parts, and feather key slides in groove.In order to reduce the rotation number of turns of handwheel, valve rod adopts double end or bull to be connected with swivel nut.The gear transmission structure itself that the utility model adopts has self-locking performance, and the trapezoidal thread shape trapezoidal thread of attaching most importance to can bear larger load.
In order to realize good sealing effect, adopt the double seal of elastic packing and metal sealing.In the groove of elastic seal ring on the slide plate by compression molding embedding sealing slide plate, and through post-cure.Along with the movement of sealing slide plate to sealed at both ends of valve body, elastic seal ring is pressed in the groove gradually.The slide plate metal surface that this moment is machined and the metallic sealing section at valve body two ends form the sealing of secondary metal to metal, have both prevented that the elastic seal ring circle from being continued extruding, had again the electrostatic function of preventing; Adopt independent gasket seal compared to the valve body of common valve and valve gap, valve body and the valve gap of having a double meaning double break and drainage function valve have adopted the double sealing structure of O type circle and pad, and sealing is safe and reliable; Adopt packing seal compared to the common valve valve stem part, the utility model adopts the double sealing structure of filler and O type circle, has greatly improved sealability.
This apparatus structure design principle:
In the valve switch process, the sealing surface of Sealing and valve body sealing surface remain certain gap, make Sealing be able to free rotation, and without friction, sealing surface does not have wearing and tearing between the sealing surface.Valve is in opening process, drive unit rises to certain height by driving mechanism with spool, lifting along with spool, two slide plates are retracted to the valve center by spool, when the slide plate sealing surface breaks away from valve body sealing surface fully and forms certain gap, drive unit works on and makes together half-twist of spool and slide plate by driving mechanism, to valve opening;
Valve is in closing process, drive unit makes together half-twist of spool and slide plate by driving mechanism, this moment, valve was in closed condition, but do not form sealing, continue rotation hand wheel, by driving mechanism spool is pushed, along with moving down of spool, draw close to valve body both sides sealing surface thereby promote slide plate.Until the elastic seal ring on the slide plate evenly is expressed on the sealing surface on valve body both sides, form sealing.
Hence one can see that in the switching process of valve, and Sealing (slide plate) only has the Horizontal displacement of relative valve body both sides sealing surface without the vertical displacement with respect to valve body both sides sealing surface.Slide plate is in the process of rotation, and sealing surface breaks away from valve body sealing surface fully, and sealing surface is without friction, and wearing and tearing abrade, and prolong the working life of valve.
The manufacturing process of this device is divided into casting, reprocessing, assembles three steps:
At cast part, the utility model adopts integral casting process.For example spool, sealing surface and counit parts thereof are an integral body, when cast inblock has guaranteed the unidirectional pressurized of parts, have enough rigidity, and intensity and flex resistance have guaranteed accurate positioning, have reduced moment of torsion.
Reprocessing mainly refers to cast the machined follow-up modified technique of part after finishing, and after for example body cavity is processed through abrasive machine, processes through hard chromium plating, makes body cavity have corrosion resistant, and resistance to erosion is wear-resistant, corrosion resistance; (before pressing fluorine rubber) processes through hard chromium plating after the sliding-vane machine processing, and the slide plate metallic sealing section is had corrosion resistant, and resistance to erosion is wear-resistant, corrosion resistance; After the spool machining, through Nickel Plating Treatment, the spool corrosion resistant, corrosion-resistant; After the valve rod roughing, carry out quenching with Subsequent tempering, carry out nitriding after the fine finishing and process, anti-bite and wear resistance with swivel nut have been improved in surface hardness HV 〉=900; Carry out Quenching Treatment after " L " type guiding groove on the swivel nut and the processing of feather key head, abrasion resistance properties has been improved in HRC 〉=45, has guaranteed that feather key is free to slide in guiding groove.
Assemble the component that are about to through after the processing processing and connect by schematic structure, its Placement can also be selected wafer type except the standard flange structure, welding ends formula, tapped blind hole jointing type; The spool runner both can be full-bore, and undergauge also can be venturi type, was that embodiment's one flange connects the having a double meaning double break of full-bore and drainage function valve such as Fig. 2.
Using method:
A. in the valve opening process, drive unit rises to certain height with spool, lifting along with spool, two slide plates are progressively retracted first the valve center by spool, when the slide plate sealing surface breaks away from valve body sealing surface fully and forms certain gap, drive unit makes together half-twist of spool and slide plate, valve opening by driving mechanism;
B. valve is in closing process, drive unit makes together half-twist of spool and slide plate by driving mechanism, valve is in closed condition, but does not form sealing, and drive unit works on, driving mechanism pushes spool, along with moving down of spool, promote slide plate and draw close to valve body both sides sealing surface, until the elastic seal ring on the slide plate evenly is expressed on the sealing surface on valve body both sides, form sealing, valve closing is finished.
Claims (7)
1. having a double meaning double break valve with drainage function, comprise valve body (1), at the bottom of the valve (2), blowdown valve (3), slide plate (4), spool (5), valve gap (6), filler (7), filler pressing sleeve (8), Gland (9), support (10), valve rod (11), drive unit (12), guide cover (13), O shape circle (14), indicator (15), indicating arm (16), blind patch (17), bleeder valve (20), swivel nut (22), finger (23) and feather key (24), it is characterized in that valve body (1) left and right sides is provided with medium and imports and exports, be provided with spool (5) in the valve body (1), the spool both sides are equipped with slide plate (4), valve body (1) below is provided with (2) at the bottom of the valve, the valve body middle part is provided with bleeder valve (20), valve body (1) top is connected with valve gap (6), valve gap (6) top is connected with valve rod (11) by support (10), valve rod (11) outside is provided with swivel nut (22), be provided with finger (23) between valve rod (11) and the swivel nut (22), swivel nut (22) is provided with feather key (24) with support (10), the support both sides are provided with blind patch (17), valve gap (6) top is provided with filler (7), the filler top is provided with filler pressing sleeve (8), filler pressing sleeve (8) top is provided with Gland (9), valve rod (11) top is connected with drive unit (12), drive unit (12) top is provided with indicating arm (16) and indicator (15) successively, and drive unit (12) is provided with guide cover (13) and O shape circle (14) with indicating arm (16) joint.
2. a kind of having a double meaning double break valve with drainage function as claimed in claim 1 is characterized in that being provided with finger (23) between described valve rod (11) and the swivel nut (22).
3. a kind of having a double meaning double break valve with drainage function as claimed in claim 1 is characterized in that described swivel nut (22) and support (10) are provided with feather key (24).
4. a kind of having a double meaning double break valve with drainage function as claimed in claim 1 is characterized in that described slide plate and being connected of spool adopting guide-rail structure.
5. a kind of having a double meaning double break valve with drainage function as claimed in claim 1 is characterized in that described swivel nut (22) adopts L shaped groove structure.
6. a kind of having a double meaning double break valve with drainage function as claimed in claim 1 is characterized in that described valve rod and swivel nut adopt double end or bull to be connected.
7. a kind of having a double meaning double break valve with drainage function as claimed in claim 1 is characterized in that described valve adopts double sealing structure, and described double sealing structure is elastic packing and metal sealing; In the groove of elastic seal ring on the slide plate by compression molding embedding sealing slide plate, and through post-cure, along with the movement of sealing slide plate to sealed at both ends of valve body, elastic seal ring is pressed in the groove gradually, and the slide plate metal surface that this moment is machined and the metallic sealing section at valve body two ends form the sealing of secondary metal to metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220435235.XU CN202719190U (en) | 2012-08-29 | 2012-08-29 | Double block and bleed valve with function of discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220435235.XU CN202719190U (en) | 2012-08-29 | 2012-08-29 | Double block and bleed valve with function of discharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202719190U true CN202719190U (en) | 2013-02-06 |
Family
ID=47621014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220435235.XU Expired - Lifetime CN202719190U (en) | 2012-08-29 | 2012-08-29 | Double block and bleed valve with function of discharging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202719190U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439106A (en) * | 2015-08-13 | 2017-02-22 | 宝山钢铁股份有限公司 | Control valve for differential pressure transmitter |
| CN108240484A (en) * | 2018-01-12 | 2018-07-03 | 江苏远洋阀门智控股份有限公司 | A kind of double-seal rail valve |
| CN109210228A (en) * | 2018-11-07 | 2019-01-15 | 成都乘风阀门有限责任公司 | By warlord |
-
2012
- 2012-08-29 CN CN201220435235.XU patent/CN202719190U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439106A (en) * | 2015-08-13 | 2017-02-22 | 宝山钢铁股份有限公司 | Control valve for differential pressure transmitter |
| CN106439106B (en) * | 2015-08-13 | 2018-08-10 | 宝山钢铁股份有限公司 | Differential pressure transmitter control valve |
| CN108240484A (en) * | 2018-01-12 | 2018-07-03 | 江苏远洋阀门智控股份有限公司 | A kind of double-seal rail valve |
| CN109210228A (en) * | 2018-11-07 | 2019-01-15 | 成都乘风阀门有限责任公司 | By warlord |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130206 |
|
| CX01 | Expiry of patent term |