CN104154265A - Mixed-sealing type top-mounted low-temperature ball valve - Google Patents
Mixed-sealing type top-mounted low-temperature ball valve Download PDFInfo
- Publication number
- CN104154265A CN104154265A CN201410370458.6A CN201410370458A CN104154265A CN 104154265 A CN104154265 A CN 104154265A CN 201410370458 A CN201410370458 A CN 201410370458A CN 104154265 A CN104154265 A CN 104154265A
- Authority
- CN
- China
- Prior art keywords
- valve
- seal
- circle
- ring
- mounting groove
- 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.)
- Granted
Links
Classifications
-
- 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
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/10—Welded housings
-
- 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
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a mixed-sealing type top-mounted low-temperature ball valve which is composed of a valve body, a ball body, a valve block, an extended valve bonnet, an extended valve stem, an easy-to-assemble waterproof disc and an executing mechanism. Mixed sealing devices are arranged between the valve seat and the ball body, between the valve seat and the valve body as well as between the valve stem and the valve bonnet, and sealing reliability is greatly improved. Fireproof sealing rings are arranged between the valve seat and the valve body as well as between the valve stem and the valve bonnet, so that fireproof performance is effectively improved. The easy-to-assemble waterproof disc is arranged on the extended valve bonnet, so that corrosion of condensed fluid on the valve body can be effectively prevented. Besides, a limitable device and an indicating device are added in the cooperation of a connecting disc and the valve stem, so that maintenance is facilitated. On the whole, the mixed-sealing type top-mounted low-temperature ball valve is quite good in industrial popularization value.
Description
Technical field
The present invention relates to a kind of roof-mounted cryogenic ball valve, refer to especially a kind of roof-mounted cryogenic ball valve of sealed type that mixes.
Background technique
Ball valve is since coming out, and because it has simple in structure, good seal performance, and driving moment is little, easy and simple to handle, easily realize the advantages such as fast opening and closing, becomes in recent decades one of valve kind with the fastest developing speed.
Traditional cryogenic piping ball valve is to be assembled by component such as valve body, ball valve core, valve seat, lengthening valve gap, extension valve rod and drive units, thus the open/close states of the rotation control valve that drives ball valve core by rotatablely moving of extension valve rod.In valve body, be provided with for mobile flow channel and the flow pass of working medium, between described flow channel and flow pass, be provided with the lumen that can place spheroid, described spheroid is an orange with pod apertures, be provided with valve seat at flow channel and flow pass and valve body lumen place, described valve seat is the soft sealing surface that embeds synthetic plastic material composition, valve seat valve body rectilinear movement relatively, soft-hard sealing that the sealing of valve mainly relies on medium working pressure to promote floating valve seat and spheroid formation soft material and the pairing of metal stiff dough realizes.Between described valve body and end cap, end cap and pipeline, adopt flange gasket to be connected, the sealing between sealing, valve rod and valve gap between described valve seat and valve body all adopts 0 shape seal ring.
The Ball valve of pipeline of this routine can often run into following several problem under operating mode:
Sealing between valve rod and filler adopts O-ring seals conventionally, and structure is single, once O-ring seals wear out failure cannot be repaired, will cause potential safety hazard inflammable or that poisonous medium leaks outside.Even if next is to have adopted filler compacting device, but do not meet filler loading characteristic because of adjustment mode while occurring leaking, sealing effect is limited again.
Seal ring on valve seat only adopts the plastics of one organic synthesis conventionally, and to be sealing circle in frequent switch easy to wear and be subject to medium during in switch moment washes away and damage for its shortcoming, thereby valve seal was lost efficacy, and cannot normally work; And the seal ring on valve seat is meeting contraction deformation under worst cold case, because the uncompensated function of sealing coil structures easily produces internal leakage, the sealability while affecting valve closing.
Once pipe-line system breaking out of fire, the sealing configuration of traditional product and sealing material do not possess fire-proof function, O-ring seals meeting scaling loss for seal ring on flange gasket, the valve seat cylindrical of flange gasket, valve body and the valve gap of valve end and valve stem seal, the intensity of a fire can spread to valve outside and the whole pipeline of pipe downstream, brings serious safety problem to petrochemical equipment and people's lives and properties.
Its outer wall of elongated portion that lengthens valve gap there will be condensed fluid under worst cold case, and condensed fluid flows into valve heat insulation layer can affect the heat insulation effect of valve, and condensate liquid stream can cause the component corrosions such as bolt on flange in valve gap.
With the Ball valve of pipeline of actuator, the limit stoper of indicating valve gate switch is arranged in actuator conventionally, and does not have setting on valve.Once time remove actuator in maintenance, just cannot determine the switching position of valve closing member, do not meet international standard/NBS about " regulation of the limit stoper of its closure member should be provided in valve and actuator ".
Summary of the invention
The object of the invention is to: for the deficiencies in the prior art, the invention provides the roof-mounted cryogenic ball valve of mixing sealed type that a kind of sealability is reliable, fireproof performance is good.
The present invention is achieved through the following technical solutions:
A kind of roof-mounted cryogenic ball valve of sealed type that mixes, comprise valve body, spheroid, seal valve seat, lengthen valve gap, extension valve rod, water proof dish easy to assemble and actuator, described spheroid is arranged in valve channel cavity, spheroid is provided with through hole, spheroid and extension valve rod are linked, between valve body and spheroid, be provided with seal valve seat, seal valve seat is near being provided with adjusting nut on the cylindrical of spheroid one end, between adjusting nut and valve body, be provided with helical spring, lengthen valve gap, on extension valve rod surface of contact, be provided with stuffing box, lengthen valve gap and be provided with the greasing joint communicating with stuffing box, it is characterized in that: in described stuffing box, be provided with fire proof seal mechanism and elastic packing mechanism, described fire proof seal mechanism comprises gland, lower gland, fire proof seal circle and gland screw, described upper gland is connected by gland screw fastening with lower gland, upper gland and lower gland coordinate two annular concentric seal chambers of formation, in described cavity, be provided with fire proof seal circle, twice fire proof seal circle respectively with extension valve rod, lengthening valve bonnet seal coordinates, described elastic packing mechanism comprises spring sealed circle and elastic seal ring, the sealability of described elastic packing mechanism combines to realize by one of spring sealed circle and elastic seal ring or both, described spring sealed circle comprises lip circle body, convex compensation circle body and is arranged on the tension link between lip circle body two lips, described tension link and lip circle body compression fit, described lip circle body coordinates with extension valve rod, lengthening valve bonnet seal, described elastic seal ring is arranged in elastic packing loop mechanism, elastic packing loop mechanism comprises stage clip and circlip, between described stage clip and circlip, be provided with pressing plate and lining, described pressing plate is connected by lining screw fastening with lining, described stage clip, circlip and pressing plate, lining compression fit, described pressing plate and lining coordinate two annular concentric cavitys of formation, in described cavity, are provided with elastic seal ring, and twice elastic seal ring coordinates with extension valve rod, lengthening valve bonnet seal respectively.
By adopting such scheme, consequently: adjust when adjusting nut is used for assembling and mix phase mutual edge distance seal valve seat and spheroid, helical spring is used for promoting valve seat to be made its seal ring contact spheroid and applies initial sealing power.Lengthen on valve gap, extension valve rod surface of contact and be provided with stuffing box, lengthen valve gap and be provided with the greasing joint communicating with stuffing box, in described stuffing box, be provided with sealing mechanism, greasing joint can be used for sealing again of sealing configuration.In described stuffing box, be provided with fire proof seal mechanism and elastic packing mechanism, described fire proof seal mechanism can be used for preventing that the intensity of a fire from spreading to valve body outside at valve inner, described elastic packing mechanism can be used for preventing that valve body inner fluid is to outward leakage, greatly improve the sealing reliability of described ball valve, also possessed good fire retardancy simultaneously.
The further setting of the present invention is: described seal valve seat is provided with the first shoulder and the second shoulder near valve body one end cylindrical, between described the first shoulder and valve body, be provided with back-up ring, back-up ring is fastenedly connected by fixing pin and seal valve seat, back-up ring and the second shoulder form annular seal space, in annular seal space, be provided with spring sealed circle, described spring sealed circle comprises lip circle body, convex compensates circle body and is arranged on the tension link between lip circle body two lips, tension link and lip circle body compression fit, between seal valve seat and valve body fitting surface, be provided with mounting groove, in mounting groove, be provided with fire proof seal ring, it between described seal valve seat and spheroid, is soft or hard mixed seal, on seal valve seat one end near spheroid, be provided with two cylinder grooves coaxial with valve channel, groove near passage is the first mounting groove, be the second mounting groove away from the groove of passage, primary seal circle is arranged in the first mounting groove, primary seal circle and the first mounting groove interference fit, secondary seal ring is arranged in the second mounting groove, secondary seal ring and the second mounting groove are slidably matched, between secondary seal ring and the second mounting groove bottom, be provided with sealed elastic compensation device, secondary seal ring cylindrical and second is installed on cell wall fitting surface and is provided with chute, the corresponding chute of the second mounting groove cell wall place is provided with elasticity baffle ring, chute coordinates with elasticity baffle ring is spacing, described primary seal circle both sides valve seat surface is provided with metal hard-sealing face.
By adopting such scheme, consequently: between described seal valve seat and valve body, be provided with spring sealed circle and fire proof seal circle, described spring sealed circle can prevent that valve pocket inner fluid from revealing to valve lever clearance through seal valve seat and valve body gap, and described fire proof seal circle can prevent that the intensity of a fire from spreading between upstream and downstream pipeline.It between described seal valve seat and spheroid, is soft or hard mixed seal, the in the situation that of described primary seal circle wearing and tearing, described secondary seal ring can play seal action under the promotion of described elastic compensating device, the metal hard-sealing face of primary seal circle both sides can play separately seal action in the situation that major-minor seal ring all lost efficacy simultaneously, had greatly improved the sealing reliability of described seal valve seat.
The further setting of the present invention is: described sealed elastic compensation device is the U-shaped elastic seal ring that Inner establishes U-shaped stage clip.
By adopting such scheme, consequently: can, providing outside elastic compensating effect, can also meet seal request.
The further setting of the present invention is: described lip circle body two lip central bottom are provided with opening.
By adopting such scheme, consequently: can effectively increase the spreading amplitude of described lip circle body, still can complete well sealing task under worst cold case.
The further setting of the present invention is: described water proof dish easy to assemble comprises two semicircle fan rings, two semicircle fan ring one end are connected by attachment screw hinge type, the other end of two semicircle fan rings is fixedly connected with by screw bolt and nut, water proof dish easy to assemble coordinates with lengthening valve gap banding, between dismounting water proof dish and lengthening valve gap, is provided with plastic sealed pad.
By adopting such scheme, consequently: can adjust according to the thickness of thermal insulation layer the height of water proof dish, can meet the requirement of different operating modes simultaneously, can prevent that condensed fluid from flowing into cryosphere, reduce the corrosion to valve body, effectively increased the working life of described ball valve.
The further setting of the present invention is: between the top of described lengthening valve gap and actuator, be provided with land, described land endoporus place is provided with fan annular stop groove, limited impression two ends are radially extended and are indicated the switch mark corresponding with actuator, on described extension valve rod, be provided with key with groove structure and land cooperation place, described limited impression and spacing cooperation of key being arranged on extension valve rod.
By adopting such scheme, consequently: described groove structure can coordinate the position-limiting action and the position indicative function that play spheroid switch with the key being arranged on extension valve rod.Once remove actuator in the time of maintenance, just can know according to " the opening " at key place and " pass " font the switching position that shows valve closing member.
The further setting of the present invention is: described valve body coordinates with the welding of lengthening valve gap, and end, described valve channel two ends is provided with the groove with pipeline welding.
By adopting such scheme, consequently: make between valve body and valve gap and between end, valve body two ends and connecting tube all without external leakage point, housing welding type assembly parts also has advantages of because having reduced the weight that flange connects without flange and having exempted flange and connects use and maintenance cost.
Below in conjunction with accompanying drawing, the present invention is described further.
Brief description of the drawings
The structural drawing of the roof-mounted cryogenic ball valve of Fig. 1 the present invention mixing sealed type;
Fig. 2 mixes seal valve seat structural drawing in Fig. 1;
Fig. 3 is stuffing box structure figure in Fig. 1;
Fig. 4 is Fig. 1 medi-spring ring structure figure;
Fig. 5 is water proof dish structural drawing easy to assemble in Fig. 1;
Fig. 6 is land structural drawing in Fig. 1;
Fig. 7 is valve body and lengthening valve gap welding line structure figure in Fig. 1.
In Fig. 1: 1, valve body, 2, spheroid, 3, mix seal valve seat, 4, lengthen valve gap, 5, extension valve rod, 6, water proof dish easy to assemble, 7, stuffing box, 8, land, 9, actuator, 10, greasing joint, 11, groove, 12, weld seam;
In Fig. 2: 31, valve seat, 32, back-up ring, 33, fixing pin, 34, adjusting nut, 35, helical spring, 36 spring sealed circles, 37, fire proof seal ring, 38, primary seal circle, 39, secondary seal ring, 391, elastic compensating device, 392, chute, 393, elasticity baffle ring, 30, metallic sealing section;
In Fig. 3: 71, stage clip, 72, pressing plate, 73, lining, 74, elastic seal ring, 75, circlip, 76, spring sealed circle, 77, lower gland, 78, fire proof seal circle, 79, upper gland, 701, facing screw, 702, Cock screw;
In Fig. 4: 761(361), lip circle body, 762(362), convex compensation circle body, 763(363), tension link, 764(364), breach;
In Fig. 5: 61, semicircle fan ring, 62, attachment screw, 63, bolt, 64, nut, 65, plastic sealed pad;
In Fig. 6: 51, key, 81, limited impression.
Embodiment
As shown in Fig. 1-Fig. 7, this specific embodiment is a kind of roof-mounted cryogenic ball valve of sealed type that mixes, comprise valve body 1, spheroid 2, seal valve seat 3, lengthen valve gap 4, extension valve rod 5, water proof dish 6 easy to assemble, be arranged on the stuffing box 7 lengthening between valve gap 4 and extension valve rod 5 surface of contact, land 8 and actuator 9, described spheroid 2 is arranged in valve body 1 channel cavity, spheroid 2 is provided with through hole, spheroid 2 is linked with extension valve rod 5, between valve body 1 and spheroid 2, be provided with seal valve seat 3, seal valve seat 3 is near being provided with adjusting nut 34 on spheroid 2 one end cylindricals, between adjusting nut 34 and valve body 1, be provided with helical spring 35, lengthen valve gap 4, on extension valve rod 5 surface of contact, be provided with stuffing box 7, lengthen valve gap 4 and be provided with the greasing joint 10 communicating with stuffing box 7, in described stuffing box 7, be disposed with from down to up elastic sealing device, spring seal unit and fire-proof sealing device.The upper and lower two ends of described elastic sealing device are respectively arranged with circlip 75 and stage clip 71, between described circlip 75 and stage clip 71, be provided with pressing plate 72 and lining 73, described pressing plate 72 is connected by lining screw fastening with lining 73, described stage clip 71, circlip 75 and pressing plate 72, lining compression fit 73, described pressing plate 72 and lining 73 coordinate two annular concentric cavitys of formation, in described cavity, be provided with elastic seal ring 74, twice elastic seal ring 74 respectively with extension valve rod 5, lengthening valve gap 4 is sealed and matched, described stage clip 71 is dish spring, described elastic seal ring 74 is O type elastic seal ring,
Described spring sealed circle comprises lip circle body 761, convex compensation circle body 762 and is arranged on the tension link 763 between lip circle body two lips, described tension link 763 and lip circle body 761 compression fit, described lip circle body 761 is sealed and matched with extension valve rod 5, lengthening valve gap 4, and 761 liang of lip central bottom of described lip circle body are provided with opening 764.
Described fire proof seal mechanism comprises gland 79, lower gland 77, fire proof seal circle 78 and gland screw 701, described upper gland 79 and lower gland 77 are fastenedly connected by gland screw 701, upper gland 79 and lower gland 77 coordinate two annular concentric seal chambers of formation, in described cavity, be provided with fire proof seal circle 78, twice fire proof seal circle 78 coordinates with extension valve rod 5, close 4 envelopes of lengthening valve gap respectively, and described fire proof seal circle 78 adopts Expanded graphite material.
Described seal valve seat is provided with the first shoulder and the second shoulder near valve body one end cylindrical, between described the first shoulder and valve body, be provided with back-up ring 32, back-up ring 32 is fastenedly connected by fixing pin 33 and seal valve seat 3, back-up ring and the second shoulder form annular seal space, in annular seal space, be provided with spring sealed circle 36, described spring sealed circle comprises lip circle body 361, convex compensation circle body 362 and is arranged on the tension link 363 between lip circle body two lips, tension link 363 and lip circle body 361 compression fit, 361 liang of lip central bottom of described lip circle body are provided with opening 364.
Between seal valve seat 3 and valve body 1 fitting surface, be provided with mounting groove, be provided with fire proof seal ring 37 in mounting groove, described fire proof seal ring 37 adopts Expanded graphite material.
Between described seal valve seat 3 and spheroid 2, it is soft or hard mixed seal, on seal valve seat one end near spheroid, be provided with two cylinder grooves coaxial with valve channel, groove near passage is the first mounting groove, be the second mounting groove away from the groove of passage, primary seal circle 38 is arranged in the first mounting groove, primary seal circle and the first mounting groove interference fit, secondary seal ring 39 is arranged in the second mounting groove, secondary seal ring and the second mounting groove are slidably matched, between secondary seal ring and the second mounting groove bottom, be provided with sealed elastic compensation device 391, described sealed elastic compensation device 391 is established the U-shaped elastic seal ring of U-shaped stage clip for Inner.Secondary seal ring cylindrical and second is installed on cell wall fitting surface and is provided with chute 392, the corresponding chute of the second mounting groove cell wall place is provided with elasticity baffle ring 393, chute 392 coordinates with elasticity baffle ring 393 is spacing, and described primary seal circle 38 both sides valve seat surfaces are provided with metal hard-sealing face 30.
Described water proof dish easy to assemble comprises two semicircle fan rings 61, two semicircle fan ring 61 one end are connected by attachment screw 62 hinge types, the other end of two semicircle fan rings 61 is fixedly connected with nut 64 by bolt 63, described nut 64 is wing nut, water proof dish 6 easy to assemble coordinates with lengthening valve gap 5 bandings, between dismounting water proof dish 6 and lengthening valve gap 5, is provided with plastic sealed pad 65.
Between the top of described lengthening valve gap 4 and actuator 9, be provided with land 8, described land 8 endoporus places are provided with fan annular stop groove 81, limited impression 81 two ends are radially extended and are indicated the switch mark corresponding with actuator, on described extension valve rod 5, join 8 places of closing with groove structure and land and be provided with key 51, described limited impression 81 and spacing cooperation of key 51 being arranged on extension valve rod.
Described valve body 1 coordinates with 4 welding of lengthening valve gap, and described valve body 1 end, passage two ends is provided with the groove 11 with pipeline welding.Weld seam 12 between described valve body and valve gap in the valve body 1 away from from valve seat 3 mouthful on, and adopt narrow gap U groove, technology of automatic submerged arc welding, its groove angle of described narrow gap U groove Lincoln weld α is 1 degree～7 degree, groove bottom gap h minimum is 7mm, and employing can insert the special narrow tip of groove so that welding wire is sent to narrow groove bottom.This has not only been avoided the heat affecting of welding process to valve seat 3 sealing surfaces, and has avoided weld seam 12 to bear main pipeline because of the pipe stress of installing and the cold and hot variation of cold and hot worst cold case causes, and has improved the functional reliability of weld seam 12.Housing welding type assembly parts also has advantages of the weight because reduced flange connection without flange and has exempted flange connection use and maintenance cost in addition.
Claims (7)
1. one kind is mixed the roof-mounted cryogenic ball valve of sealed type, comprise valve body, spheroid, seal valve seat, lengthen valve gap, extension valve rod, water proof dish easy to assemble, land and actuator, described spheroid is arranged in valve channel cavity, spheroid is provided with through hole, spheroid and extension valve rod are linked, between valve body and spheroid, be provided with seal valve seat, seal valve seat is near being provided with adjusting nut on the cylindrical of spheroid one end, between adjusting nut and valve body, be provided with helical spring, lengthen valve gap, on extension valve rod surface of contact, be provided with stuffing box, lengthen valve gap and be provided with the greasing joint communicating with stuffing box, it is characterized in that: in described stuffing box, be provided with fire proof seal mechanism and elastic packing mechanism, described fire proof seal mechanism comprises gland, lower gland, fire proof seal circle and gland screw, described upper gland is connected by gland screw fastening with lower gland, upper gland and lower gland coordinate two annular concentric seal chambers of formation, in described cavity, be provided with fire proof seal circle, twice fire proof seal circle respectively with extension valve rod, lengthening valve bonnet seal coordinates, described elastic packing mechanism comprises spring sealed circle and elastic seal ring, the sealability of described elastic packing mechanism combines to realize by one of spring sealed circle and elastic seal ring or both, described spring sealed circle comprises lip circle body, convex compensation circle body and is arranged on the tension link between lip circle body two lips, described tension link and lip circle body compression fit, described lip circle body coordinates with extension valve rod, lengthening valve bonnet seal, described elastic seal ring is arranged in elastic packing loop mechanism, elastic packing loop mechanism comprises stage clip and circlip, between described stage clip and circlip, be provided with pressing plate and lining, described pressing plate is connected by lining screw fastening with lining, described stage clip, circlip and pressing plate, lining compression fit, described pressing plate and lining coordinate two annular concentric cavitys of formation, in described cavity, are provided with elastic seal ring, and twice elastic seal ring coordinates with extension valve rod, lengthening valve bonnet seal respectively.
2. the roof-mounted cryogenic ball valve of mixing sealed type according to claim 1, it is characterized in that: described seal valve seat is provided with the first shoulder and the second shoulder near valve body one end cylindrical, between described the first shoulder and valve body, be provided with back-up ring, back-up ring is fastenedly connected by fixing pin and seal valve seat, back-up ring and the second shoulder form annular seal space, in annular seal space, be provided with spring sealed circle, described spring sealed circle comprises lip circle body, convex compensates circle body and is arranged on the tension link between lip circle body two lips, tension link and lip circle body compression fit, between seal valve seat and valve body fitting surface, be provided with mounting groove, in mounting groove, be provided with fire proof seal ring, it between described seal valve seat and spheroid, is soft or hard mixed seal, on seal valve seat one end near spheroid, be provided with two cylinder grooves coaxial with valve channel, groove near passage is the first mounting groove, be the second mounting groove away from the groove of passage, primary seal circle is arranged in the first mounting groove, primary seal circle and the first mounting groove interference fit, secondary seal ring is arranged in the second mounting groove, secondary seal ring and the second mounting groove are slidably matched, between secondary seal ring and the second mounting groove bottom, be provided with sealed elastic compensation device, secondary seal ring cylindrical and second is installed on cell wall fitting surface and is provided with chute, the corresponding chute of the second mounting groove cell wall place is provided with elasticity baffle ring, chute coordinates with elasticity baffle ring is spacing, described primary seal circle both sides valve seat surface is provided with metal hard-sealing face.
3. the roof-mounted cryogenic ball valve of mixing sealed type according to claim 2, is characterized in that: described sealed elastic compensation device is the U-shaped elastic seal ring that Inner establishes U-shaped stage clip.
4. the roof-mounted cryogenic ball valve of mixing sealed type according to claim 1 and 2, is characterized in that: described lip circle body two lip central bottom are provided with opening.
5. the roof-mounted cryogenic ball valve of mixing sealed type according to claim 1 and 2, it is characterized in that: described water proof dish easy to assemble comprises two semicircle fan rings, two semicircle fan ring one end are connected by attachment screw hinge type, the other end of two semicircle fan rings is fixedly connected with by screw bolt and nut, water proof dish easy to assemble coordinates with lengthening valve gap banding, between dismounting water proof dish and lengthening valve gap, is provided with plastic sealed pad.
6. the roof-mounted cryogenic ball valve of mixing sealed type according to claim 1 and 2, it is characterized in that: between the top of described lengthening valve gap and actuator, be provided with land, described land endoporus place is provided with fan annular stop groove, limited impression two ends are radially extended and are indicated the switch mark corresponding with actuator, on described extension valve rod, be provided with key with groove structure and land cooperation place, described limited impression and spacing cooperation of key being arranged on extension valve rod.
7. a kind of roof-mounted cryogenic ball valve of sealed type that mixes according to claim 1 and 2, is characterized in that: described valve body coordinates with the welding of lengthening valve gap, and end, described valve channel two ends is provided with the groove with pipeline welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410370458.6A CN104154265B (en) | 2014-07-30 | 2014-07-30 | A kind of roof-mounted cryogenic ball valve of closed type that mixes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410370458.6A CN104154265B (en) | 2014-07-30 | 2014-07-30 | A kind of roof-mounted cryogenic ball valve of closed type that mixes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104154265A true CN104154265A (en) | 2014-11-19 |
| CN104154265B CN104154265B (en) | 2016-05-25 |
Family
ID=51879841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410370458.6A Active CN104154265B (en) | 2014-07-30 | 2014-07-30 | A kind of roof-mounted cryogenic ball valve of closed type that mixes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104154265B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488782A (en) * | 2018-12-07 | 2019-03-19 | 超达阀门集团股份有限公司 | A kind of valve seat sealing mechanism of upper dress formula fixed valve and fixing ball valve it is suitable for worst cold case |
| CN114321433A (en) * | 2022-03-17 | 2022-04-12 | 成都成高阀门有限公司 | Large-diameter forced sealing ball valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201373167Y (en) * | 2009-02-12 | 2009-12-30 | 王奕彤 | Low temperature ball valve |
| CN202001643U (en) * | 2011-01-27 | 2011-10-05 | 保一集团有限公司 | Multi-sealed all-welded flat plate gate valve |
| US20120153206A1 (en) * | 2010-12-16 | 2012-06-21 | Zipson Steel Industrial Co., Ltd. | Ball Valve |
| CN102679008A (en) * | 2012-05-21 | 2012-09-19 | 保一集团有限公司 | Heavy-calibre ball valve |
| CN202756656U (en) * | 2012-08-20 | 2013-02-27 | 天津祥嘉流体控制***有限公司 | Top-mounted ultra-low temperature ball valve |
| CN202992241U (en) * | 2012-10-09 | 2013-06-12 | 镇江市铸造阀门厂有限公司 | Ultra-low temperature ball valve |
| CN103742668A (en) * | 2014-01-10 | 2014-04-23 | 苏州纽威阀门股份有限公司 | Top-mounted ball valve |
| CN203979488U (en) * | 2014-07-30 | 2014-12-03 | 保一集团有限公司 | The roof-mounted cryogenic ball valve of a kind of mixing sealed type |
-
2014
- 2014-07-30 CN CN201410370458.6A patent/CN104154265B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201373167Y (en) * | 2009-02-12 | 2009-12-30 | 王奕彤 | Low temperature ball valve |
| US20120153206A1 (en) * | 2010-12-16 | 2012-06-21 | Zipson Steel Industrial Co., Ltd. | Ball Valve |
| CN202001643U (en) * | 2011-01-27 | 2011-10-05 | 保一集团有限公司 | Multi-sealed all-welded flat plate gate valve |
| CN102679008A (en) * | 2012-05-21 | 2012-09-19 | 保一集团有限公司 | Heavy-calibre ball valve |
| CN202756656U (en) * | 2012-08-20 | 2013-02-27 | 天津祥嘉流体控制***有限公司 | Top-mounted ultra-low temperature ball valve |
| CN202992241U (en) * | 2012-10-09 | 2013-06-12 | 镇江市铸造阀门厂有限公司 | Ultra-low temperature ball valve |
| CN103742668A (en) * | 2014-01-10 | 2014-04-23 | 苏州纽威阀门股份有限公司 | Top-mounted ball valve |
| CN203979488U (en) * | 2014-07-30 | 2014-12-03 | 保一集团有限公司 | The roof-mounted cryogenic ball valve of a kind of mixing sealed type |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488782A (en) * | 2018-12-07 | 2019-03-19 | 超达阀门集团股份有限公司 | A kind of valve seat sealing mechanism of upper dress formula fixed valve and fixing ball valve it is suitable for worst cold case |
| CN109488782B (en) * | 2018-12-07 | 2024-03-12 | 超达阀门集团股份有限公司 | Valve seat sealing mechanism of upper-mounted fixed valve and fixed ball valve applicable to low-temperature working condition |
| CN114321433A (en) * | 2022-03-17 | 2022-04-12 | 成都成高阀门有限公司 | Large-diameter forced sealing ball valve |
| CN114321433B (en) * | 2022-03-17 | 2022-05-13 | 成都成高阀门有限公司 | Large-diameter forced sealing ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104154265B (en) | 2016-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100371635C (en) | Scraper type two-way high-temperature metal hard-sealed ball valve | |
| CN205479583U (en) | In -band leaks super low temperature check valve of function | |
| CN102410381A (en) | Bidirectional hard seal ball valve for coal chemical industry | |
| CN105508720A (en) | Corrugated pipe stop valve for photo-thermal electricity generation fused salt | |
| CN102094987A (en) | Ultrahigh pressure flat plate gate valve | |
| CN104154265B (en) | A kind of roof-mounted cryogenic ball valve of closed type that mixes | |
| CN111396589A (en) | Novel high-temperature hard-sealing fixed ball valve with emergency cut-off function | |
| CN203979488U (en) | The roof-mounted cryogenic ball valve of a kind of mixing sealed type | |
| US2784933A (en) | Service tau | |
| CN103775674A (en) | Low-temperature spherical valve | |
| CN208816705U (en) | High sealing performance fluorine lining butterfly valve | |
| CN203686213U (en) | Butt welding type high-temperature and high-pressure rapid cut-off steam ball valve supporting online maintenance | |
| CN101469778A (en) | Flange type high temperature resistant bellows gate valve | |
| CN205937950U (en) | Take monolith support's ball valve that valve rod blew off of preventing | |
| CN202188153U (en) | Bidirectional hard-seal fixed-type ball valve used in coal chemical industry | |
| CN108612858B (en) | Concealed rod type all-metal sealing valve and implementation method thereof | |
| CN210531618U (en) | Pneumatic stop valve for high-pressure oxygen | |
| CN205504062U (en) | Ball valve fire resistive construction | |
| CN203718011U (en) | Low-temperature ball valve | |
| CN205504064U (en) | Soft or hard double sealing ball valve | |
| CN203395210U (en) | High-reliability two-way hard sealed butterfly valve | |
| CN207246443U (en) | A kind of bidirectional sealed butterfly valve | |
| CN206522447U (en) | A kind of plastic cement sealing ring | |
| CN212429821U (en) | Top-mounted type hemisphere valve special for sludge | |
| CN104180010A (en) | Top-mounted ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Mixed-sealing type top-mounted low-temperature ball valve Effective date of registration: 20171213 Granted publication date: 20160525 Pledgee: Zhejiang bank Wenzhou Limited by Share Ltd Yongjia branch Pledgor: Baoyi Group Co., Ltd. Registration number: 2017330000253 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |