CN107388017A - It is easy to the HTHP drainage spherical valve of assembling - Google Patents
It is easy to the HTHP drainage spherical valve of assembling Download PDFInfo
- Publication number
- CN107388017A CN107388017A CN201710803193.8A CN201710803193A CN107388017A CN 107388017 A CN107388017 A CN 107388017A CN 201710803193 A CN201710803193 A CN 201710803193A CN 107388017 A CN107388017 A CN 107388017A
- Authority
- CN
- China
- Prior art keywords
- valve
- ring
- valve body
- easy
- disc spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008676 import Effects 0.000 claims abstract description 11
- 210000004907 gland Anatomy 0.000 claims description 19
- 239000000945 filler Substances 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 4
- 235000013409 condiments Nutrition 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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
- F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
- F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
- F16T1/38—Component parts; Accessories
-
- 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
- F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
- F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
- F16T1/38—Component parts; Accessories
- F16T1/40—Actuating mechanisms of ball valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of HTHP drainage spherical valve for being easy to assembling, including valve body, spheroid and valve rod, stem bottom is connected with spheroid, both sides are respectively equipped with medium entrance and media outlet in valve body, import valve seat is provided with the valve body of medium inlet side and is provided with outlet valve seat in the valve body of media outlet side, import valve seat and outlet valve seat are bonded to form metal-seated with two end faces of spheroid respectively, also set up in the medium entrance side of valve body and be additionally provided with elastic component, adjusting sleeve and back-up ring, back-up ring is a takeup type back-up ring, takeup type back-up ring is arranged in back-up ring mounting groove, and radial clearance is compensated automatically.The present invention at medium entrance end by setting takeup type back-up ring to replace original double open or pendant collet, 360 degree of supporting surface will not produce lug interference in device, there is no flash, load capacity of the Spiral wound multi-turn winding with high intensity, after screwing in workpiece, automatic compensation radial clearance, is easy to assemble.
Description
Technical field
The present invention relates to valve field, more particularly to a kind of HTHP drainage spherical valve for being easy to assembling.
Background technology
Set off an explosion because the water vapour of high temperature easily produces hydrogen with the oxygen mix in factory building, therefore it is required that valve has
Have compared with performances such as high wear resistance, anti-external leakage, fire prevention, and existing high-temperature steam ball-valve dedicated, it is fixed two and three
Piece is in the majority, be connected in the middle part of bonnet and valve body, the connection of stuffing-box and valve body, fixing axle and valve body junction, be easier to produce sternly
The external leakage of weight, safety in utilization cannot ensure.The potted component used（Such as graphite after valve, middle road metallic gasket etc.）In height
Easy seal failure under warm high pressure, valve is easily set to produce serious leak, so as to cause security incident.Solve in the prior art
The certainly technical scheme of above mentioned problem, such as Application No.：2014105009322, patent name is：A kind of high-temperature steam ball valve and its
The patent of invention of assembly method, solve above mentioned problem, but still deposited the problem of following：1st, the medium entrance in valve body
Place uses pressure ring, and pressure ring uses divided ring or pendant collet, and such setting is easy to pressure ring being installed in mounting groove, so meeting
Causing pressure ring, workpiece can rock with having gap in mounting groove；2nd, between divided ring or pendant collet plus screw fix, workpiece according to
Difficulty is big, and feed consumption takes, and match-drill difficulty can not have greatly any deviation；3rd, when bolt gland junction is in vibration, punching
Hit or during the working environment such as cyclic loading, high temperature, low temperature, corrosion, the deformation of creep, stress relaxation, loosening, tired can occur for bolt
Phenomena such as labor, stress corrosion, now bolt clipping forcee will accordingly change.Expendable deformation once occurs for filler, it
Original compressed thickness cannot be returned to, causes to relatively move at gland, bolt load under pretension condition then declines, then
It can cause and leakage is produced at filler.Common method is to carry out thermal consolidating to bolt, i.e., the fastening bolt again after system heating.
Although by tightening bolt again, can solve the problem.But if undue frequently enter tightly again, " ratcheting " can be caused,
Finally make bolt failure.
The content of the invention
The invention aims to overcome above mentioned problem, there is provided a kind of HTHP drainage spherical valve for being easy to assembling.
To reach above-mentioned purpose, the method that the present invention uses is：A kind of HTHP drainage spherical valve for being easy to assembling, including
Valve body, spheroid and valve rod, the stem bottom are connected with the spheroid, and both sides are respectively equipped with medium entrance and Jie in the valve body
Matter is exported, and import valve seat is provided with the valve body of medium inlet side and is provided with outlet valve in the valve body of media outlet side
Seat, the import valve seat and outlet valve seat are bonded to form metal-seated with two end faces of spheroid respectively, in described valve
The medium entrance side of body, which is also set up, is additionally provided with elastic component, adjusting sleeve and back-up ring, described adjustment be set on elastic component with
And between back-up ring, described elastic component one end compresses with import valve seat, and the other end compresses with adjusting sleeve, described adjusting sleeve one end
Compressed with elastic component, the other end is compressed with back-up ring, and described back-up ring is a takeup type back-up ring, and described takeup type back-up ring is set
In back-up ring mounting groove, and radial clearance is compensated automatically.
As a modification of the present invention, stuffing box is additionally provided with described valve rod, the stuffing box is sheathed on valve
It is fixedly mounted on the outside of bar and with valve body, described stuffing box includes Packing seat, upper and lower filler, gland and condiment pressing plate,
Described Packing seat, upper and lower filler are arranged between valve rod and valve body, and gland is sheathed on valve rod and by Packing seat and up and down
Filler is pushed down, and gland upper end is fixed by hold-down grid and bolt and nut, is also set between gland and hold-down grid
It is equipped with disc spring.
As a modification of the present invention, fluted, described disc spring is set to be arranged on institute on described hold-down grid
In the groove stated, the arcuate surface of disc spring contacts with the upper surface of groove, the adpting flange on the inner concave and gland of disc spring
It is in contact.
As a modification of the present invention, described disc spring is provided with two panels, is connected in parallel between two panels disc spring.
Beneficial effect：
The present invention provides a kind of ball valve, and by being set at medium entrance end, takeup type back-up ring replaces original pair to open or four open
Ring, 360 degree of supporting surface will not produce lug interference in device, and without flash, Spiral wound multi-turn winding has high-strength
The load capacity of degree, after screwing in workpiece, radial clearance is compensated automatically, and be easy to assemble；Installation disc spring adds whole at filler
The flexibility of individual fastening system, the influence for causing bolt load under pretension condition to relax because of filler creep or different heat expansion etc. is reduced, is carried
Sealing property at high gland, extends its service life.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the A portions enlarged drawing of the present invention；
Fig. 3 is the B portions enlarged drawing of the present invention；
Fig. 4 is the mounting structure schematic diagram of the back-up ring of the present invention；
Fig. 5 is the structural representation that the back-up ring of the present invention is installed in mounting groove；
Fig. 6 is the stereogram of the back-up ring of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is furture elucidated, and the present embodiment is with technical solution of the present invention
Premised under implemented, it should be understood that these embodiments are only illustrative of the invention and is not intended to limit the scope of the invention.
A kind of HTHP drainage spherical valve for being easy to assembling as shown in Fig. 1 to 5, including support 21, valve body 7, described
Support 21 on be provided with axis hole 19, described valve rod 15 passes through described axis hole 19, and passes through screw 13 and the phase of locating piece 22
Connection.Locating piece 22 is operated for connecting handle.
The bottom of valve rod 15 is connected with the spheroid 5, and both sides are respectively equipped with medium entrance in the valve body 7 and medium goes out
Mouthful, import valve seat 4 is provided with the valve body of medium inlet side, outlet valve seat is provided with the valve body of media outlet side
6, the import valve seat 4 and outlet valve seat 6 are bonded to form metal-seated with two end faces of spheroid 5 respectively.Described branch
Casting is integrated between frame 21 and valve body 7, support 21 and the Integral die-forged of valve body 7 are formed, inside and out intensity is born enough
Any loading force, service life can be consistent with body.
The outer surface for the opening position being connected on described valve body 7 with support 21 is provided with a cell body, described groove
Body is a deep-slotted chip breaker 17, the outer surface ramp type groove external form for the opening position being connected on valve body with support, welding when
Time is able to protect valve when can effectively reduce welding deformation, particularly post weld heat treatment.
Described outlet valve seat 6 is provided with the step that a diameter diminishes close to media outlet one end, on described valve body 7
The stepped hole being engaged with the step of the outlet valve seat 6 is provided with, the end face b on outlet valve seat step and valve body stepped hole phase
The end face of fitting, after reaching 1.6 μm using ramp numerical control (NC) Machining Accuracy, then finish is polished using wool brush and reaches 0.2 μ
M, the end face on valve body step reach whole plane in mutual slight match grinding with the end face that valve seat stepped hole fits, realize and seal；
The pressure testing pressure of valve is more than using interference fit, its magnitude of interference between face of cylinder a and valve body stepped hole on outlet valve seat step
Power.
Also set up in the medium entrance side of described valve body 7 and be additionally provided with elastic component 3, adjusting sleeve 2 and back-up ring 1, the bullet
Property part 3 be preferably selected disc spring, described adjusting sleeve 2 is arranged between elastic component 3 and back-up ring 1, described one end of elastic component 3 with
Import valve seat 4 compresses, and the other end compresses with adjusting sleeve 2, and described one end of adjusting sleeve 2 compresses with elastic component 3, the other end and back-up ring
1 compresses, and described back-up ring 1 is a takeup type back-up ring, and described takeup type back-up ring is arranged in back-up ring mounting groove, and is mended automatically
Repay radial clearance.By set at medium entrance end takeup type back-up ring replace it is original it is double open or pendant collet, 360 degree of support
Face will not produce lug interference in device, without flash, load capacity of the Spiral wound multi-turn winding with high intensity, rotation
After entering workpiece, radial clearance is compensated automatically
Anti- flying barrel 12 is arranged with described valve rod 15, described anti-flying barrel 12 is arranged between boss 20 and support 21.Institute
Fixed between the anti-flying barrel 12 and described support 21 stated by pin, described pin is to roll heavy elastic cylindrical pin 14.It is heavy
Elastic cylindrical pin 14 is when loading, meeting automatic expansion, without any gap so that anti-flying barrel 12 and the fix tightly of support 21
Lean on.Described anti-flying barrel 12 is an overall structure, and the overall anti-flying barrel 12 of flip-over type is effectively embedded in integral support, has high-strength
The anti-chikung energy of degree, can also play prevents valve rod to bias placement.
In described valve rod 15 spray treatment is carried out with the place that anti-flying barrel 12, anti-flying barrel 12 contact with support 21.
Special spray treatment, valve rod and the anti-flying barrel of overall flip-over type, the anti-flying barrel of overall flip-over type and support friction are carried out to the workpiece
Coefficient reduces, so as to which valve torque reduces.
Stuffing box is additionally provided with described valve rod 15, the stuffing box is sheathed on the outside of valve rod 15 and consolidated with valve body 7
Dingan County fills, and described stuffing box includes Packing seat 8, filler 16, gland 9 and condiment pressing plate 10, described Packing seat 8,
Filler 16 is arranged between valve rod 15 and valve body 7, and gland 9 is sheathed on valve rod 15 and pushes down Packing seat 8 and filler 16, fills out
The material upper end of gland 9 is fixed by hold-down grid 10 and bolt and nut 11, is additionally provided between gland 9 and hold-down grid 10
Disc spring 18.
Fluted, described disc spring 18 is set to be arranged in described groove on described hold-down grid 10, disc spring 18
Arcuate surface contacted with the upper surface of groove, the inner concave of disc spring 18 is in contact with the adpting flange on gland 9.In order to increase
Add the elasticity of disc spring 18, can be used in parallel by two disc springs 18, the inner concave of two disc springs 18 is in contact, two arcuate surfaces
It is in contact respectively with the adpting flange on the upper surface of groove and gland 9.
The establishment of the anti-extrusion graphite of filler 16 plus inconel silk packing ring in the present embodiment, can meet API 622
Micro- leakage requires that wear-resistant, heatproof high temperature can reach 650 degree.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, in addition to
Formed technical scheme is combined by above technical characteristic.
Claims (4)
1. a kind of HTHP drainage spherical valve for being easy to assembling, including valve body（7）, spheroid（5）And valve rod（15）, the valve rod
（15）Bottom and the spheroid（5）Connection, the valve body（7）Interior both sides are respectively equipped with medium entrance and media outlet, in medium
Import valve seat is provided with the valve body of inlet side（4）Outlet valve seat is provided with the valve body of media outlet side（6）, it is described
Import valve seat（4）And outlet valve seat（6）Respectively with spheroid（5）Two end faces be bonded to form metal-seated, its feature exists
In：In described valve body（7）Medium entrance side also set up and be additionally provided with elastic component（3）, adjusting sleeve（2）And back-up ring（1）, institute
The adjusting sleeve stated（2）It is arranged on elastic component（3）And back-up ring（1）Between, described elastic component（3）One end and import valve seat（4）
Compress, the other end and adjusting sleeve（2）Compress, described adjusting sleeve（2）One end and elastic component（3）Compress, the other end and back-up ring（1）
Compress, described back-up ring（1）For a takeup type back-up ring, described takeup type back-up ring is arranged in back-up ring mounting groove, and automatically
Compensate radial clearance.
A kind of 2. HTHP drainage spherical valve for being easy to assembling according to claim 1, it is characterised in that：In described valve
Bar（15）On be additionally provided with stuffing box, the stuffing box is sheathed on valve rod（15）Outside and and valve body（7）It is fixedly mounted, it is described
Stuffing box includes Packing seat（8）, upper and lower filler（16）, gland（9）And condiment pressing plate（10）, described Packing seat（8）、
Upper and lower filler（16）It is arranged on valve rod（15）With valve body（7）Between, gland（9）It is sheathed on valve rod（15）And by Packing seat
（8）And upper and lower filler（16）Push down, gland（9）Upper end passes through hold-down grid（10）And bolt and nut（11）It is fixed, filling out
Expect gland（9）With hold-down grid（10）Between be additionally provided with disc spring（18）.
A kind of 3. HTHP drainage spherical valve for being easy to assembling according to claim 2, it is characterised in that：Filled out in described
Expect pressing plate（10）It is upper that fluted, described disc spring is set（18）It is arranged in described groove, disc spring（18）Arcuate surface with it is recessed
The upper surface contact of groove, disc spring（18）Inner concave and gland（9）On adpting flange be in contact.
A kind of 4. HTHP drainage spherical valve for being easy to assembling according to claim 3, it is characterised in that：Described disc spring
（18）It is provided with two panels, two panels disc spring（18）Between be connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710803193.8A CN107388017A (en) | 2017-09-08 | 2017-09-08 | It is easy to the HTHP drainage spherical valve of assembling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710803193.8A CN107388017A (en) | 2017-09-08 | 2017-09-08 | It is easy to the HTHP drainage spherical valve of assembling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107388017A true CN107388017A (en) | 2017-11-24 |
Family
ID=60351695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710803193.8A Pending CN107388017A (en) | 2017-09-08 | 2017-09-08 | It is easy to the HTHP drainage spherical valve of assembling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107388017A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019047916A1 (en) * | 2017-09-08 | 2019-03-14 | 江苏科维仪表控制工程有限公司 | Manual high-temperature and high-pressure hydrophobic ball valve having superior sealing property |
| CN112360988A (en) * | 2020-11-24 | 2021-02-12 | 成都正升能源技术开发有限公司 | Condensate valve for rapidly recovering oilfield associated gas |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203239986U (en) * | 2013-05-02 | 2013-10-16 | 伯特利阀门集团有限公司 | Integrated type high performance partitioning valve |
| CN204239804U (en) * | 2014-09-18 | 2015-04-01 | 苏州工业园区思达德阀门有限公司 | The special floating ball valve of high pressure steam |
| CN206130174U (en) * | 2016-10-20 | 2017-04-26 | 浙江天特阀门有限公司 | Forged steel integral type ball valve that floats |
| CN106763862A (en) * | 2016-12-26 | 2017-05-31 | 梅州市理想阀门技术有限公司 | Double spheroid single-direction metal sealing face ball valves |
| CN206398346U (en) * | 2017-01-05 | 2017-08-11 | 四川沃兰特阀门制造有限公司 | A kind of HTHP drainage spherical valve |
| CN207213623U (en) * | 2017-09-08 | 2018-04-10 | 江苏科维仪表控制工程有限公司 | It is easy to the HTHP drainage spherical valve of assembling |
-
2017
- 2017-09-08 CN CN201710803193.8A patent/CN107388017A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203239986U (en) * | 2013-05-02 | 2013-10-16 | 伯特利阀门集团有限公司 | Integrated type high performance partitioning valve |
| CN204239804U (en) * | 2014-09-18 | 2015-04-01 | 苏州工业园区思达德阀门有限公司 | The special floating ball valve of high pressure steam |
| CN206130174U (en) * | 2016-10-20 | 2017-04-26 | 浙江天特阀门有限公司 | Forged steel integral type ball valve that floats |
| CN106763862A (en) * | 2016-12-26 | 2017-05-31 | 梅州市理想阀门技术有限公司 | Double spheroid single-direction metal sealing face ball valves |
| CN206398346U (en) * | 2017-01-05 | 2017-08-11 | 四川沃兰特阀门制造有限公司 | A kind of HTHP drainage spherical valve |
| CN207213623U (en) * | 2017-09-08 | 2018-04-10 | 江苏科维仪表控制工程有限公司 | It is easy to the HTHP drainage spherical valve of assembling |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019047916A1 (en) * | 2017-09-08 | 2019-03-14 | 江苏科维仪表控制工程有限公司 | Manual high-temperature and high-pressure hydrophobic ball valve having superior sealing property |
| CN112360988A (en) * | 2020-11-24 | 2021-02-12 | 成都正升能源技术开发有限公司 | Condensate valve for rapidly recovering oilfield associated gas |
| CN112360988B (en) * | 2020-11-24 | 2022-05-17 | 成都正升能源技术开发有限公司 | Condensate valve for rapidly recovering oilfield associated gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2426392A (en) | Pressure sealed joint | |
| RU2559216C2 (en) | Bidirectional self-balancing shutdown pressure valve | |
| CN207213623U (en) | It is easy to the HTHP drainage spherical valve of assembling | |
| CN107388017A (en) | It is easy to the HTHP drainage spherical valve of assembling | |
| CN203023508U (en) | Balance type high-pressure stop valve | |
| CN207213622U (en) | The manual HTHP drainage spherical valve of the superior formula of sealing | |
| CN107339457A (en) | It is a kind of can on-line maintenance upper dress formula fixing ball valve | |
| US6595488B2 (en) | Butterfly valve | |
| CN207421377U (en) | Wear-resistant manual high temperature and pressure drainage spherical valve | |
| CN107388018A (en) | Pneumatic high temperature high pressure draining ball valve | |
| CN103016736A (en) | Hydraulic/air pressure controlled mechanical seal device | |
| CN207421764U (en) | Pneumatic high temperature high pressure draining ball valve with stopper | |
| CN207421767U (en) | Pneumatic high temperature high pressure draining ball valve | |
| CN107387803A (en) | Wear-resistant manual HTHP drainage spherical valve | |
| CN107448769A (en) | The manual HTHP drainage spherical valve of the superior formula of sealing | |
| CN204284478U (en) | LNG heavy caliber cast steel stop valve | |
| CN207122606U (en) | A kind of upper dress formula fixing ball valve for being resistant to worst cold case | |
| CN207500798U (en) | A kind of installation steam trap integral multifunctional valve group | |
| WO2019047916A1 (en) | Manual high-temperature and high-pressure hydrophobic ball valve having superior sealing property | |
| CN206338461U (en) | Fluoroplastic all-liner corrugated tube valve special for chlorine | |
| CN211010130U (en) | Upper sealing structure of low-temperature valve stuffing box | |
| CN107781631A (en) | Pneumatic high temperature high pressure draining ball valve with stopper | |
| CN203686213U (en) | Butt welding type high-temperature and high-pressure rapid cut-off steam ball valve supporting online maintenance | |
| CN1089414C (en) | New-type safety valve | |
| CN202992171U (en) | Hydraulic/pneumatic controlled mechanical sealing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171124 |