CN107152560A - A kind of water-cooling type high temperature forging steel valve - Google Patents
A kind of water-cooling type high temperature forging steel valve Download PDFInfo
- Publication number
- CN107152560A CN107152560A CN201710542898.9A CN201710542898A CN107152560A CN 107152560 A CN107152560 A CN 107152560A CN 201710542898 A CN201710542898 A CN 201710542898A CN 107152560 A CN107152560 A CN 107152560A
- Authority
- CN
- China
- Prior art keywords
- bonnet
- spring
- gland
- support
- lengthening
- 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
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- 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
- F16K49/00—Means in or on valves for heating or cooling
- F16K49/005—Circulation means for a separate heat transfer fluid
- F16K49/007—Circulation means for a separate heat transfer fluid located within the obturating element
Abstract
The invention discloses a kind of water-cooling type high temperature forging steel valve, including valve body, lengthen bonnet, valve rod, support and ring-shaped handle, the top of the valve body is closely connected by bolt with lengthening bonnet, support is provided with the top of the lengthening bonnet, ring-shaped handle is connected with the top of the support, it is described to lengthen the integrative-structure that bonnet is up-thin-low-thick cylindrical type, fixed cover is equipped with cooling device on the lengthening bonnet outer wall, packing layer is provided with stuffing-box at the top of the lengthening bonnet, autocompensation installation is provided with the top of described filler layer, gland is provided with the top of the autocompensation installation, the autocompensation installation and gland are set on valve rod, the bottom of the gland other end corresponding with valve rod and support constitutes secondary compensating system；The present invention can be cooled down effectively to equipment, efficiently avoid the generation of filler overheat condition, realized the purpose that filler is compensated automatically, improved the sealing of equipment.
Description
Technical field
The present invention relates to valve arrangement technical field, specially a kind of water-cooling type high temperature forging steel valve.
Background technology
At present, existing high-temperature valve lengthening bonnet using adapter be threadedly coupled with bonnet socket weld, adapter with bonnet and
Adapter butt welding connects three kinds of connected modes.When adapter uses socket weld or be threadedly coupled with bonnet, to ensure throat thickness, it must add
Take over cylindrical greatly, so add manufacturing cost.When adapter is connected with bonnet using butt welding, throat thickness is constant, but processing
Complex process.It is that safety belt carrys out hidden danger, next lacks drop and three kinds of connected modes all have welding stress and weldquality
Warm measure, high-temperature valve is operationally constantly in the condition of high temperature, and cooling measure lacks, can only it is single by increase bonnet come
Filler is protected, effect is undesirable, and filler stress relaxation phenomenon is serious, and the stability of seal operation is poor, existing high-temperature valve
Packing seal structure, the pretightning force that eyelet bolt is applied to filler is constant, because abrasion causes the compression of filler
Amount is slightly reduced, and will aggravate the stress relaxation of filler, so as to reduce the stability and reliability of seal operation, equipment is mended automatically
Repay ability poor, after filler abrasion, the gap between filler and valve rod, filler chamber interior walls is increased therewith, and conventional high-temperature valve
Ability of the packing seal structure without automatic compensation thrust, as gap increases, amount of leakage also increases.
Therefore how to improve prior art defect, be urgent problem.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of water-cooling type high temperature forging steel valve, to solve
Prior art is to lacking cooling measure, sealing stability difference and the poor technical problem of automatic compensation ability.
The present invention is achieved by the following technical solutions：
The invention provides a kind of water-cooling type high temperature forging steel valve, including valve body, lengthening bonnet, valve rod, support and annular handle
Hand, the top of the valve body is closely connected by bolt with lengthening bonnet, and support is provided with the top of the lengthening bonnet, described
Ring-shaped handle is connected with the top of support, the bottom of the valve rod is fixedly connected with the valve ball in valve body, and the other end is sequentially passed through
It is fixedly connected after lengthening bonnet and support with ring-shaped handle, it is described to lengthen the integrative-structure that bonnet is up-thin-low-thick cylindrical type, institute
State fixed cover on lengthening bonnet outer wall and cooling device is housed, be provided with packing layer in the stuffing-box at the top of the lengthening bonnet, institute
State and autocompensation installation be provided with the top of packing layer, be provided with gland at the top of the autocompensation installation, it is described from
Dynamic compensation device and gland are set on valve rod, the bottom of the gland other end corresponding with valve rod and support
Portion constitutes secondary compensating system.
Further, the cooling device is specifically made up of two and half cooling water tanks, and two half cooling water tanks lead to respectively
Cross the locating slot lengthened on bonnet to be fixedly mounted on lengthening bonnet outer wall, two half cooling water tanks pass through the company of being welded and fixed
Connect, water inlet and delivery port are respectively arranged with above and below two half cooling water tanks.
Further, the autocompensation installation includes spring retainer plate, spring base and spring, and the spring retainer plate is set
The through hole corresponding with spring uniformly is offered on the top of spring base, and spring retainer plate, the spring is arranged on through hole
Interior, the top of the spring presses closer the bottom of gland, and the bottom of the spring presses closer the top of spring retainer plate, the bullet
Spring abutment is arranged on the top of packing layer.
Further, the secondary compensating system is specifically made up of gland, support and eyelet bolt, the frame bottom
Outer wall on be movably installed with eyelet bolt, it is corresponding with valve rod that the other end of the eyelet bolt passes vertically through gland
Closely it is connected with movable joint nut behind one end, disk spring is arranged with the eyelet bolt between the movable joint nut and gland
Pad, the top of the disc-shaped spring gasket presses closer the bottom of movable joint nut, and the bottom of disc-shaped spring gasket presses closer filler pressure
The top of lid.
Further, the mode being connected through a screw thread between bonnet and support that lengthens is attached.
Further, the lengthening bonnet, valve rod, support, ring-shaped handle and autocompensation installation are coaxially distributed.
The present invention has advantages below compared with prior art：The invention provides a kind of water-cooling type high temperature forging steel valve, pass through
Cooling device is installed on bonnet outer wall is lengthened, effective cooling to lengthening bonnet is realized, while effectively prevent stuffing-box
Interior packing layer overheat, improves the service life of packing layer, and cooling device is made up of two and half cooling water tanks, improves installation
Convenience, the autocompensation installation installed additional on packing layer passes through the mutual cooperation between spring retainer plate, spring base and spring
Downward power can effectively be applied to packing layer so that packing layer can be realized to being automatically replenished because of the gap that abrasion occurs
The purpose that filler is compensated automatically, downward power and most is applied to gland with reference to disc-shaped spring gasket in secondary compensating system
Eventually on conduction to packing layer, and then the purpose to filler second compensation is realized, be effectively improved the sealing of equipment.
Brief description of the drawings
Fig. 1 is the structural representation of water-cooling type high temperature forging steel valve of the present invention；
Fig. 2 is the partial enlarged drawing of water-cooling type high temperature forging steel valve of the present invention；
Fig. 3 is the top view of water-cooling type high temperature forged steel valve spring retainer plate of the present invention.
In figure：1st, valve body；2nd, bonnet is lengthened；3rd, valve rod；4th, support；5th, ring-shaped handle；6th, cooling device；7th, packing layer；
8th, autocompensation installation；9th, gland；10th, half cooling water tank；11st, water inlet；12nd, delivery port；13rd, spring retainer plate；14、
Spring base；15th, spring；16th, through hole；17th, eyelet bolt；18th, movable joint nut；19th, disc-shaped spring gasket.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refer to Fig. 1-3, a kind of embodiment that the present invention is provided：A kind of water-cooling type high temperature forging steel valve, including valve body 1, plus
Long bonnet 2, valve rod 3, support 4 and ring-shaped handle 5, the top of valve body 1 are closely connected by bolt with lengthening bonnet 2, lengthen valve
The top of lid 2 is provided with support 4, and the top of support 4 is connected with ring-shaped handle 5, and bottom and the valve ball in valve body 1 of valve rod 3 are consolidated
Fixed connection, the other end is fixedly connected after sequentially passing through lengthening bonnet 2 and support 4 with ring-shaped handle 5, lengthen bonnet 2 for it is upper it is thin under
The integrative-structure of thick cylindrical type, lengthens fixed cover on the outer wall of bonnet 2 and cooling device 6 is housed, in the stuffing-box for lengthening the top of bonnet 2
Packing layer 7 is provided with, the top of packing layer 7 is provided with autocompensation installation 8, and the top of autocompensation installation 8 is provided with filler
Gland 9, autocompensation installation 8 and gland 9 are set on valve rod 3, the other end corresponding with valve rod 3 of gland 9
Secondary compensating system is constituted with the bottom of support 4, cooling device 6 is specifically made up of two and half cooling water tanks 10, two and half coolings
Water tank 10 is fixedly mounted on the lengthening outer wall of bonnet 2 by lengthening the locating slot on bonnet 2 respectively, and two and half cooling water tanks 10 lead to
Cross and be welded and fixed connection, two and half cooling water tanks are respectively arranged with water inlet 11 and delivery port 12, autocompensation installation 8 about 10
Including spring retainer plate 13, spring base 14 and spring 15, spring retainer plate 13 is arranged on the top of spring base 14, and spring is fixed
The through hole 16 corresponding with spring 15 uniformly is offered on circle 13, spring 15 is arranged in through hole 16, and the top of spring 15 is pressed closer
The bottom of gland 9, the bottom of spring 15 presses closer the top of spring retainer plate 13, and spring base 14 is arranged on the top of packing layer 7
Portion, secondary compensating system is specifically made up of gland 9, support 4 and eyelet bolt 17, activity peace on the outer wall of the bottom of support 4
Equipped with eyelet bolt 17, the other end of eyelet bolt 17 pass vertically through behind the one end corresponding with valve rod 3 of gland 9 with movable joint
Nut 18 is closely connected, and disc-shaped spring gasket 19, dish are arranged with the eyelet bolt 17 between movable joint nut 18 and gland 9
The top of shape spring shim 19 presses closer the bottom of movable joint nut 18, and the bottom of disc-shaped spring gasket 19 presses closer gland 9
Top, lengthens the mode being connected through a screw thread between bonnet 2 and support 4 and is attached, lengthen bonnet 2, valve rod 3, support 4, ring
Shape handle 5 and autocompensation installation 8 are coaxially distributed.
Operation principle, during work, can be rotated by rotating ring-shaped handle 5 with ovable valve stem 3, and then with the valve in moving valve 1
Ball is rotated, and finally realizes effective folding of equipment, is structure as a whole because lengthening bonnet 2, is effectively improved the intensity of equipment, led to
The lengthening of bonnet itself is crossed, its radiating effect is improved, bonnet 2 is lengthened and can effectively be kept away by the way of being threadedly coupled with support 4
The drawbacks of exempting to be attached by welding, reduces manufacturing cost, improves the security of equipment, when the heat in valve body 1 is passed
When being directed on lengthening bonnet 2, lengthen the cooling device 6 of fixed suit on the valve body of bonnet 2 effectively can drop to lengthening bonnet 2
Temperature, because cooling device 6 is made up of two and half cooling water tanks 10, improves the convenience of installation, cooling water is by one and half cooling waters
The water inlet 11 of case 10 enters, after the internal circulation flow of cooling device 6, is flowed by the delivery port 12 of another half cooling water tank 10
Go out, realize the Efficient Cycle of cooling water, and then effectively can be cooled down to lengthening bonnet 2, while can effectively keep away
The packing layer 7 for exempting to lengthen in the top stuffing-box of bonnet 2 is overheated, and the service life of packing layer 7 is improved, when packing layer 7 is because of equipment
When long-play causes gap occur between the outer wall of valve rod 3 and stuffing-box inwall, the autocompensation installation at the top of packing layer 7
Spring 15 in 8 can apply downward power to spring base 14, be ultimately conducted to the filler in packing layer 7, packing layer 7 to generation
Gap carries out filler supplement, realizes the purpose compensated automatically, reduces the through hole on the slip of equipment, spring retainer plate 13
16 effectively can carry out spacing to spring 15, because through hole 16 is multiple and be evenly distributed on spring retainer plate 13, and then realize
The stress balance of spring base 14, has reached the purpose balanced compensated to gap of packing layer 7, passes through movable joint in secondary compensating system
Mutual cooperation between bolt 17 and movable joint nut 18 is operatively joined gland 9 and support 4, realizes to gland
9 effective spacing and fixation, when abrasion missing occurs in the filler in packing layer 7, is arranged on movable joint nut 18 and gland 9
Between disc-shaped spring gasket 19 can apply downward power to gland 9, and conducted through autocompensation installation 8 to packing layer 7,
Enable 7 pairs of packing layer because the gap that abrasion occurs is automatically replenished, realize the second compensation of packing layer 7, drop again
The low slip of equipment.
Claims (6)
1. a kind of water-cooling type high temperature forging steel valve, including valve body (1), lengthening bonnet (2), valve rod (3), support (4) and ring-shaped handle
(5), the top of the valve body (1) is closely connected by bolt with lengthening bonnet (2), and the top for lengthening bonnet (2) is set
Have and ring-shaped handle (5) is connected with the top of support (4), the support (4), bottom and the valve in valve body (1) of the valve rod (3)
Ball is fixedly connected, and the other end sequentially passes through lengthening bonnet (2) and support (4) is fixedly connected with ring-shaped handle (5) afterwards, and its feature exists
In the lengthening bonnet (2) is that fixed cover is equipped with the integrative-structure of up-thin-low-thick cylindrical type, lengthening bonnet (2) outer wall
Packing layer (7), the top of described filler layer (7) are provided with cooling device (6), the stuffing-box lengthened at the top of bonnet (2)
It is provided with the top of autocompensation installation (8), the autocompensation installation (8) and is provided with gland (9), the automatic compensation
Device (8) and gland (9) are set on valve rod (3), the gland (9) other end corresponding with valve rod (3)
Secondary compensating system is constituted with the bottom of support (4).
2. a kind of water-cooling type high temperature forging steel valve according to claim 1, it is characterised in that the cooling device (6) is specific
It is made up of two and half cooling water tanks (10), two half cooling water tanks (10) are respectively by lengthening the locating slot on bonnet (2)
It is fixedly mounted on lengthening bonnet (2) outer wall, two half cooling water tanks (10) are fixedly connected by welding, two described half
Cooling water tank (10) is respectively arranged with water inlet (11) and delivery port (12) up and down.
3. a kind of water-cooling type high temperature forging steel valve according to claim 1, it is characterised in that the autocompensation installation (8)
Including spring retainer plate (13), spring base (14) and spring (15), the spring retainer plate (13) is arranged on spring base (14)
Uniform on top, and spring retainer plate (13) to offer the through hole (16) corresponding with spring (15), the spring (15) is set
In through hole (16), the top of the spring (15) presses closer the bottom of gland (9), and the bottom of the spring (15) presses closer bullet
The top of spring retainer plate (13), the spring base (14) is arranged on the top of packing layer (7).
4. a kind of water-cooling type high temperature forging steel valve according to claim 1, it is characterised in that the secondary compensating system is specific
It is made up of gland (9), support (4) and eyelet bolt (17), movable joint is movably installed with the outer wall of support (4) bottom
Bolt (17), the other end of the eyelet bolt (17) pass vertically through behind gland (9) one end corresponding with valve rod (3) with
Movable joint nut (18) is closely connected, and is arranged with the eyelet bolt (17) between the movable joint nut (18) and gland (9)
Disc-shaped spring gasket (19), the top of the disc-shaped spring gasket (19) presses closer the bottom of movable joint nut (18), and disk spring
The bottom of pad (19) presses closer the top of gland (9).
5. a kind of water-cooling type high temperature forging steel valve according to claim 1, it is characterised in that the lengthening bonnet (2) and branch
The mode being connected through a screw thread between frame (4) is attached.
6. a kind of water-cooling type high temperature forging steel valve according to claim 1, it is characterised in that the lengthening bonnet (2), valve rod
(3), support (4), ring-shaped handle (5) and autocompensation installation (8) are coaxially distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710542898.9A CN107152560B (en) | 2017-07-05 | 2017-07-05 | Water-cooled high-temperature forged steel valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710542898.9A CN107152560B (en) | 2017-07-05 | 2017-07-05 | Water-cooled high-temperature forged steel valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107152560A true CN107152560A (en) | 2017-09-12 |
| CN107152560B CN107152560B (en) | 2023-05-16 |
Family
ID=59795497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710542898.9A Active CN107152560B (en) | 2017-07-05 | 2017-07-05 | Water-cooled high-temperature forged steel valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107152560B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898745A (en) * | 2021-10-19 | 2022-01-07 | 浙江新华阀门制造有限公司 | High-temperature vacuum butterfly valve with water cooling function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0875039A (en) * | 1994-08-31 | 1996-03-19 | Ishida Valve Kogyo Kk | Valve device |
| CN102829195A (en) * | 2012-09-05 | 2012-12-19 | 张丽智 | Universal compact type forged steel self-sealing stop valve |
| WO2016169252A1 (en) * | 2015-04-22 | 2016-10-27 | 南通市天源阀门制造有限公司 | Integrated stop valve |
| CN205896374U (en) * | 2016-07-26 | 2017-01-18 | 沈阳科派卡装备有限公司 | Governing valve with elastic compensation structure and high temperature packing box structure |
| CN206988557U (en) * | 2017-07-05 | 2018-02-09 | 安徽省屯溪高压阀门有限公司 | A kind of water-cooling type high temperature forging steel valve |
-
2017
- 2017-07-05 CN CN201710542898.9A patent/CN107152560B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0875039A (en) * | 1994-08-31 | 1996-03-19 | Ishida Valve Kogyo Kk | Valve device |
| CN102829195A (en) * | 2012-09-05 | 2012-12-19 | 张丽智 | Universal compact type forged steel self-sealing stop valve |
| WO2016169252A1 (en) * | 2015-04-22 | 2016-10-27 | 南通市天源阀门制造有限公司 | Integrated stop valve |
| CN205896374U (en) * | 2016-07-26 | 2017-01-18 | 沈阳科派卡装备有限公司 | Governing valve with elastic compensation structure and high temperature packing box structure |
| CN206988557U (en) * | 2017-07-05 | 2018-02-09 | 安徽省屯溪高压阀门有限公司 | A kind of water-cooling type high temperature forging steel valve |
Non-Patent Citations (1)
| Title |
|---|
| 李航;: "高温阀门填料研究与应用" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898745A (en) * | 2021-10-19 | 2022-01-07 | 浙江新华阀门制造有限公司 | High-temperature vacuum butterfly valve with water cooling function |
| CN113898745B (en) * | 2021-10-19 | 2023-03-07 | 浙江新华阀门制造有限公司 | High-temperature vacuum butterfly valve with water cooling function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107152560B (en) | 2023-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105910474B (en) | More tubular sheet heat exchangers | |
| CN104658618A (en) | Nickel-based alloy pressure-resistant shell and implementation method thereof | |
| CN104421568A (en) | T-shaped double-seal leakage stopping clamp for pipeline and processing method | |
| CN104616706A (en) | Integrated pressure-resistant shell assembly | |
| CN107152560A (en) | A kind of water-cooling type high temperature forging steel valve | |
| CN206988557U (en) | A kind of water-cooling type high temperature forging steel valve | |
| CN110701310A (en) | Nuclear-grade electric sodium bellows stop valve | |
| CN204476340U (en) | A kind of double-packing incline lubricating type packing box | |
| CN206988464U (en) | A kind of ultralow temperature high-pressure ball valve | |
| CN207014107U (en) | Ball valve opens mesopore buting iron bits frock | |
| CN106787375B (en) | Oil seal structure is taken turns to turbo generator | |
| CN207814594U (en) | A kind of ultralow temperature super-pressure static seal joint structure connecting valve | |
| CN206647067U (en) | A kind of inner equilibrium metal sealing washing pipe assembly of top-drive device | |
| CN207213623U (en) | It is easy to the HTHP drainage spherical valve of assembling | |
| CN203023737U (en) | Short-bolt type expansive self-stress grouting hoop | |
| CN204988646U (en) | Sealed test chuck of shower nozzle | |
| CN205718591U (en) | Many tubular sheet heat exchangers | |
| CN205261039U (en) | Novel tube bank and removable sealing connecting structure that trades of tube sheet | |
| CN107781631A (en) | Pneumatic high temperature high pressure draining ball valve with stopper | |
| CN107388017A (en) | It is easy to the HTHP drainage spherical valve of assembling | |
| CN208816828U (en) | It is a kind of can online replacement valve rod sealing assembly with pressure the buried ball valve of welding entirely | |
| CN208982877U (en) | Glue injection jig | |
| CN204222260U (en) | A kind of fast open enclosed safe heating isopressing device | |
| CN206450144U (en) | Full wedge structure anti-knock container | |
| CN215293670U (en) | Pressure self-tightening sealing upper-mounted ball valve |
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 | ||
| CB02 | Change of applicant information |
Address after: 242700 No. 55, Meilin Avenue, Huangshan Economic Development Zone, Anhui Province Applicant after: Anhui Tunxi High Pressure Valve Co.,Ltd. Address before: 242700 No. 55, Meilin Avenue, Huangshan Economic Development Zone, Anhui Province Applicant before: ANHUI TUNXI HIGH PRESSURE VALVE Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |