CN106870740A - Novel high-temperature high-pressure gauge valve - Google Patents
Novel high-temperature high-pressure gauge valve Download PDFInfo
- Publication number
- CN106870740A CN106870740A CN201710191391.3A CN201710191391A CN106870740A CN 106870740 A CN106870740 A CN 106870740A CN 201710191391 A CN201710191391 A CN 201710191391A CN 106870740 A CN106870740 A CN 106870740A
- Authority
- CN
- China
- Prior art keywords
- hole
- valve
- bonnet
- screw thread
- gland
- 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
- 239000000945 filler Substances 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract 2
- 210000004907 gland Anatomy 0.000 claims description 43
- 238000012856 packing Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 1
- 238000005242 forging Methods 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011799 hole material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
Classifications
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
-
- 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
- F16K27/02—Construction of housing; Use of materials therefor of lift 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
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
-
- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The present invention provides a kind of Novel high-temperature high-pressure gauge valve, its structure is novel, using integration forging valve body, forced bonnet and nut check and metal hard-sealing and material filling type soft sealing structure, central coaxial is good, and overall sealing performance is excellent, significantly improves the firm stability of total and reliable security performance, sealing property more ensures that service life is longer.Excellent unlatching terminates back seal performance, it is ensured that in valve just in case under the situation of filler position wear and leakage, also ensuring that to be not in leakage.
Description
Technical field
The present invention relates to nuclear power equipment automation control system, keying and the control of liquid or gas in all kinds of instrumentation pipelines
Device processed.
Background technology
The structure of wide variety of gauge valve is mostly general ordinary construction, and the core level gauge valve in nuclear power equipment,
Due to requiring that service life reaches 60 years under with high temperature, high pressure and radiation medium state high, so high temperature resistant to valve,
Sealing property, resistance to persistence energy under high pressure, radiation position high, handling, security performance are all most important.
The content of the invention
The present invention proposes a kind of Novel high-temperature high-pressure gauge valve regarding to the issue above, significantly improves total firm
Stability and reliable security performance, sealing property more ensures that service life is longer.
Specific technical scheme is as follows：
Novel high-temperature high-pressure gauge valve, including valve body, valve element, valve rod, bonnet, bonnet nut, metallic gasket, locknut,
Packing seat, filler, filler pressing sleeve, gland, gland nut, handle, interior hexagonal cylindrical end holding screw, wherein, valve element leads to
Cross spool end to be rotatably arranged on valve rod with the mating reaction of stem lower portion fixing hole, bonnet fit is arranged on outside valve rod
Portion, loads Packing seat, filler and filler pressing sleeve successively from bottom to top between bonnet and valve rod, gland pretension is arranged on filler
Gland top, gland is fixed between bonnet internal thread m1 and threaded stem by screw thread cooperation, makes the outer of stem lower portion
Oblique angle step is pressed together on the edge of the screw thread transitional pore of gland；Bonnet is by bonnet nut and the external screw thread M1 on valve body top
With in the interior step for merging press-in valve body top, there is metallic gasket between the interior step and bonnet nut on valve body top, and lead to
Cross bonnet nut and compress sealing, bonnet nut top compresses locking by locknut with the external screw thread M2 cooperations of bonnet；Filler and valve
Soft seal is formed between cap bore wall and valve rod, gland nut is coordinated by the external screw thread M2 with bonnet, fastening locking gland；
Handle is fixed on valve rod, and it is fixed that interior hexagonal cylindrical end holding screw is tightened with the side plane of valve rod top one；Rotate handle and drive valve
Bar rotates, and realizes being turned on and off for valve, when opening valve is further continued for opening to final position, the outer oblique angle platform of stem lower portion
Rank and gland lower end bore edges closure, realize the back seal of valve.
Above-mentioned Novel high-temperature high-pressure gauge valve, wherein, the valve body is processed by an integral metal material, valve body top
External screw thread M1 and the first blind hole being coaxially disposed with external screw thread M1 are provided with, the top of the first blind hole is step, interior step in one
Bottom is primary sealing area a, and the middle part of the first blind hole is valve pocket hole, and the bottom of the first blind hole is valve seat orifice, valve seat orifice and valve
The inlet hole of entrance point is communicated, the outlet opening thereof for having an inclined hole and the port of export in valve pocket hole；Inlet hole and outlet opening have
One section of expanded hole, for pipeline spigot-and-socket welding；The diagonal symmetric position of body base is provided with 2 fixed internal threads, for installing
It is fixed；External screw thread M1 coordinates with bonnet nut, and interior step coordinates with the middle round platform rank of bonnet, the roundlet step of valve pocket hole and bonnet
Coordinate, be metal sealing between the primary sealing area a of interior step bottom and the secondary sealing area A of the middle round platform rank of bonnet.
Above-mentioned Novel high-temperature high-pressure gauge valve, wherein, there are three step cutting patterns bonnet outside one end from small to large, its
The interior step cooperation of the valve pocket hole cooperation of medium and small round outer diameter of step and valve body, middle round outer diameter of step and valve body, great circle step and valve
The inwall of box nut coordinates, and the A faces of middle round platform rank are secondary sealing area, and the B faces of middle round platform rank are the first thrust face, great circle step
Top be external screw thread M2, external screw thread M2 and gland nut coordinate；It is sequentially provided with from bottom to top in bonnet and is coaxially disposed with bonnet
First through hole, the second through hole, third through-hole, end face and the end face of roundlet step of first through hole be flush, first through hole
Internal diameter is respectively less than the internal diameter of the second through hole and third through-hole, and the second through hole coordinates with filler and filler pressing sleeve, and third through-hole is provided with
Internal thread m1, internal thread m1 coordinate with the external screw thread M3 of gland.
Above-mentioned Novel high-temperature high-pressure gauge valve, wherein, the fourth hole and being coaxially disposed are provided with described filler gland
Five through holes, fourth hole is located at the top of fifth hole, and internal thread m2 is provided with fourth hole, and internal thread m2 matches somebody with somebody with threaded stem
Close, fifth hole is screw thread transitional pore；External screw thread M3 is provided with outside gland, there are escape, external screw thread in external screw thread M3 roots
M3 tops are provided with a circle cylinder projection, and the C faces of cylinder and cylindrical outer wall coordinate with gland nut inwall bottom.
Above-mentioned Novel high-temperature high-pressure gauge valve, wherein, the 6th through hole is provided with the bonnet nut, the 6th through hole is provided with
Internal thread m3, internal thread m3 top are provided with second step, and second step b faces are the second thrust face.
Beneficial effects of the present invention are：
1st, simple structure of the present invention, central coaxial is good, and overall sealing performance is excellent, operates light.
2nd, using forced bonnet and locking mechanism, make overall structure firmer, stable, improve anti-seismic performance, safety
It is reliable.
3rd, excellent unlatching terminates back seal performance, it is ensured that under the situation of valve contingency filler position wear and leakage,
Can ensure that to be not in leakage.
Brief description of the drawings
Fig. 1 is sectional structure chart of the present invention.
Fig. 2 is the structure chart of valve body.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the upward view of Fig. 2.
Fig. 5 is the profile of bonnet.
Fig. 6 is the profile of gland.
Fig. 7 is the structure chart of bonnet nut.
Specific embodiment
To make technical scheme become apparent from clearly, the present invention is described further below in conjunction with the accompanying drawings,
Any technical characteristic to technical solution of the present invention carries out the scheme that equivalencing and conventional reasoning draw and each falls within guarantor of the present invention
Shield scope.
Reference
Handle 1, interior hexagonal cylindrical end holding screw 2, gland 3, gland nut 4, valve rod 5, filler pressing sleeve 6, locknut
7th, filler 8, bonnet 9, bonnet nut 10, valve element 11, valve body 12, metallic gasket 13, Packing seat 14, fixing hole 15, first are blind
Hole 16, interior step 17, valve pocket hole 18, valve seat orifice 19, inlet hole 20, inclined hole 21, outlet opening 22, expanded hole 23, fixed internal thread
24th, roundlet step 25, middle round platform rank 26, great circle step 27, first through hole 28, the second through hole 29, third through-hole 30, fourth hole
31st, fifth hole 32, escape 33, cylinder projection 34, the 6th through hole 35, second step 36.
A kind of Novel high-temperature high-pressure gauge valve, including valve body 12 as shown in the figure, valve element 11, valve rod 5, bonnet 9, bonnet nut
10th, metallic gasket 13, locknut 7, Packing seat 14, filler 8, filler pressing sleeve 6, gland 3, gland nut 4, handle 1, interior six
Angle cylinder end clamping fixed screw 2, wherein, valve element sets by the way that spool end is rotatable with the mating reaction of stem lower portion fixing hole 15
Put on valve rod, bonnet fit is arranged on stem exterior, between bonnet and valve rod from bottom to top successively load Packing seat, filler and
Filler pressing sleeve, gland pretension is arranged on filler pressing sleeve top, and gland is fixed on bonnet internal thread by screw thread cooperation
Between m1 and threaded stem, make stem lower portion outer oblique angle step be pressed together on gland screw thread transitional pore edge；Valve
Cover and matched somebody with somebody in the interior step for merging press-in valve body top with the external screw thread M1 on valve body top by bonnet nut, the interior step on valve body top
There is metallic gasket between bonnet nut, and sealing is compressed by bonnet nut, bonnet nut top passes through locknut and bonnet
External screw thread M2 coordinate compress locking；Form soft seal between filler and bonnet hole wall and valve rod, gland nut by with bonnet
External screw thread M2 coordinate, fastening locking gland；Handle is fixed on valve rod, on interior hexagonal cylindrical end holding screw and valve rod
The side plane of portion one tightens fixed；Rotate handle band ovable valve stem to rotate, realize being turned on and off for valve, be further continued for out when valve is opened
When opening final position, the outer oblique angle step of stem lower portion is closed with gland lower end bore edges, realizes the back seal of valve.
The valve body is processed by an integral metal material, and valve body top is provided with external screw thread M1 and same with external screw thread M1
The first blind hole 16 that axle is set, the top of the first blind hole is step 17 in, and interior step bottom is primary sealing area a, and first is blind
The middle part in hole is valve pocket hole 18, and the bottom of the first blind hole is valve seat orifice 19, and valve seat orifice is communicated with the inlet hole 20 at valve inlet end,
There is an inclined hole 21 to be connected with the outlet opening 22 of the port of export in valve pocket hole；Inlet hole and outlet opening have one section of expanded hole 23, use
In pipeline spigot-and-socket welding；The diagonal symmetric position of body base is provided with 2 fixed internal threads 24, for installing fixation；External screw thread
M1 coordinates with bonnet nut, and interior step coordinates with the middle round platform rank of bonnet, and valve pocket hole coordinates with the roundlet step of bonnet, interior step
It is metal sealing between the secondary sealing area A of the primary sealing area a of bottom and the middle round platform rank of bonnet.
There are three step cutting patterns, the wherein valve pocket of the external diameter of roundlet step 25 and valve body in bonnet outside one end from small to large
Hole coordinates, and the middle external diameter of round platform rank 26 coordinates with the interior step of valve body, and great circle step 27 coordinates with the inwall of bonnet nut, middle round platform
The A faces of rank are secondary sealing area, and the B faces of middle round platform rank are the first thrust face, and the top of great circle step is external screw thread M2, external screw thread
M2 coordinates with gland nut；Be sequentially provided with from bottom to top in bonnet be coaxially disposed with bonnet first through hole 28, the second through hole 29,
Third through-hole 30, end face and the end face of roundlet step of first through hole are flush, and the internal diameter of first through hole is respectively less than the second through hole
With the internal diameter of third through-hole, the second through hole and filler and filler pressing sleeve coordinate, and third through-hole is provided with internal thread m1, internal thread m1 with
The external screw thread M3 of gland coordinates.
The fourth hole 31 and fifth hole 32 being coaxially disposed are provided with described filler gland, fourth hole is located at the 5th and leads to
The top in hole, is provided with internal thread m2 in fourth hole, internal thread m2 coordinates with threaded stem, and fifth hole is screw thread transitional pore；
External screw thread M3 is provided with outside gland, there is escape 33 external screw thread M3 roots, and external screw thread M3 tops are provided with a circle cylinder projection
34, the C faces of cylinder and cylindrical outer wall coordinate with gland nut inwall bottom.
The 6th through hole 35 is provided with the bonnet nut, the 6th through hole is provided with internal thread m3, and internal thread m3 tops are provided with
Second step 36, second step b faces are the second thrust face.
Claims (5)
1. Novel high-temperature high-pressure gauge valve, including valve body, valve element, valve rod, bonnet, bonnet nut, metallic gasket, locknut, fill out
Backing strap, filler, filler pressing sleeve, gland, gland nut, handle, interior hexagonal cylindrical end holding screw, it is characterized by, valve element
It is rotatably arranged on valve rod by the mating reaction of spool end and stem lower portion fixing hole, bonnet fit is arranged on valve rod
Outside, loads Packing seat, filler and filler pressing sleeve successively from bottom to top between bonnet and valve rod, gland pretension is arranged on to be filled out
Material gland top, gland is fixed between bonnet internal thread m1 and threaded stem by screw thread cooperation, makes stem lower portion
Outer oblique angle step is pressed together on the edge of the screw thread transitional pore of gland；Bonnet is by bonnet nut and the external screw thread on valve body top
M1 has metallic gasket with the interior step for merging press-in valve body top between the interior step and bonnet nut on valve body top, and
Compressed by bonnet nut and sealed, bonnet nut top compresses locking by locknut with the external screw thread M2 cooperations of bonnet；Filler with
Soft seal is formed between bonnet hole wall and valve rod, gland nut is coordinated by the external screw thread M2 with bonnet, fastening locking filler pressure
Lid；Handle is fixed on valve rod, and it is fixed that interior hexagonal cylindrical end holding screw is tightened with the side plane of valve rod top one；Handle is rotated to drive
Valve rod rotates, and realizes being turned on and off for valve, when opening valve is further continued for opening to final position, the outer oblique angle of stem lower portion
Step and gland lower end bore edges closure, realize the back seal of valve.
2. Novel high-temperature high-pressure gauge valve as claimed in claim 1, it is characterized by, the valve body is added by an integral metal material
Work is formed, and valve body top is provided with external screw thread M1 and the first blind hole being coaxially disposed with external screw thread M1, and the top of the first blind hole is
Step in one, interior step bottom is primary sealing area a, and the middle part of the first blind hole is valve pocket hole, and the bottom of the first blind hole is valve seat
Hole, valve seat orifice is communicated with the inlet hole at valve inlet end, the outlet opening thereof for having an inclined hole and the port of export in valve pocket hole；Import
Hole and outlet opening have one section of expanded hole, for pipeline spigot-and-socket welding；The diagonal symmetric position of body base is provided with 2 fixations
Screw thread, for installing fixation；External screw thread M1 and bonnet nut coordinate, and interior step coordinates with the middle round platform rank of bonnet, valve pocket hole with
The roundlet step of bonnet coordinates, and is between the primary sealing area a of interior step bottom and the secondary sealing area A of the middle round platform rank of bonnet
Metal sealing.
3. Novel high-temperature high-pressure gauge valve as claimed in claim 1, it is characterized by, bonnet outside one end has from small to large
Three step cutting patterns, wherein roundlet outer diameter of step coordinate with the valve pocket hole of valve body, and middle round outer diameter of step is matched somebody with somebody with the interior step of valve body
Close, great circle step coordinates with the inwall of bonnet nut, the A faces of middle round platform rank are secondary sealing area, and the B faces of middle round platform rank are first
Thrust face, the top of great circle step is external screw thread M2, and external screw thread M2 coordinates with gland nut；It is sequentially provided with from bottom to top in bonnet
First through hole, the second through hole, the third through-hole being coaxially disposed with bonnet, the end face of first through hole are mutually neat with the end face of roundlet step
Flat, the internal diameter of first through hole is respectively less than the internal diameter of the second through hole and third through-hole, and the second through hole coordinates with filler and filler pressing sleeve,
Third through-hole is provided with internal thread m1, and internal thread m1 coordinates with the external screw thread M3 of gland.
4. Novel high-temperature high-pressure gauge valve as claimed in claim 1, it is characterized by, it is provided with described filler gland and is coaxially disposed
Fourth hole and fifth hole, fourth hole be located at fifth hole top, internal thread m2, internal thread are provided with fourth hole
M2 coordinates with threaded stem, and fifth hole is screw thread transitional pore；External screw thread M3 is provided with outside gland, external screw thread M3 roots have
Escape, external screw thread M3 tops are provided with a circle cylinder projection, and the C faces of cylinder and cylindrical outer wall are matched somebody with somebody with gland nut inwall bottom
Close.
5. Novel high-temperature high-pressure gauge valve as claimed in claim 1, it is characterized by, the 6th is provided with the bonnet nut and is led to
Hole, the 6th through hole is provided with internal thread m3, and internal thread m3 tops are provided with second step, and second step b faces are the second thrust face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710191391.3A CN106870740A (en) | 2017-03-28 | 2017-03-28 | Novel high-temperature high-pressure gauge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710191391.3A CN106870740A (en) | 2017-03-28 | 2017-03-28 | Novel high-temperature high-pressure gauge valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106870740A true CN106870740A (en) | 2017-06-20 |
Family
ID=59159459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710191391.3A Pending CN106870740A (en) | 2017-03-28 | 2017-03-28 | Novel high-temperature high-pressure gauge valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106870740A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185474A (en) * | 2018-09-17 | 2019-01-11 | 中国石油天然气股份有限公司 | instrument fixing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4634095A (en) * | 1985-07-26 | 1987-01-06 | Taylor Julian S | Multiple stage choke valve |
| CN2126353U (en) * | 1992-05-31 | 1992-12-30 | 陈淳林 | Static-sealing type stop valve of pressure gauge |
| CN103256394A (en) * | 2013-05-17 | 2013-08-21 | 江苏星河阀门有限公司 | Instrument blocking valve with non-rotary valve rod |
| CN203594838U (en) * | 2013-11-25 | 2014-05-14 | 江苏星河阀门有限公司 | Double-valve set of corrugated pipe instrument |
| CN205026123U (en) * | 2015-09-09 | 2016-02-10 | 上海隆麦机械设备工程有限公司 | Special instrument valve of denitration modular system |
| CN206816826U (en) * | 2017-03-28 | 2017-12-29 | 江苏星河阀门有限公司 | Novel high-temperature high-pressure gauge valve |
-
2017
- 2017-03-28 CN CN201710191391.3A patent/CN106870740A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4634095A (en) * | 1985-07-26 | 1987-01-06 | Taylor Julian S | Multiple stage choke valve |
| CN2126353U (en) * | 1992-05-31 | 1992-12-30 | 陈淳林 | Static-sealing type stop valve of pressure gauge |
| CN103256394A (en) * | 2013-05-17 | 2013-08-21 | 江苏星河阀门有限公司 | Instrument blocking valve with non-rotary valve rod |
| CN203594838U (en) * | 2013-11-25 | 2014-05-14 | 江苏星河阀门有限公司 | Double-valve set of corrugated pipe instrument |
| CN205026123U (en) * | 2015-09-09 | 2016-02-10 | 上海隆麦机械设备工程有限公司 | Special instrument valve of denitration modular system |
| CN206816826U (en) * | 2017-03-28 | 2017-12-29 | 江苏星河阀门有限公司 | Novel high-temperature high-pressure gauge valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109185474A (en) * | 2018-09-17 | 2019-01-11 | 中国石油天然气股份有限公司 | instrument fixing device |
| CN109185474B (en) * | 2018-09-17 | 2023-09-26 | 中国石油天然气股份有限公司 | Instrument fixing device |
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| 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: 20170620 |